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• 03:52

### The Fundamental Theorem of Arithmetic

308 views / 0 likes - added

The Fundamental Theorem of Arithmetic More free lessons at: http://www.khanacademy.org/video?v=8CluknrLeys

• 07:18

### Origins Of Algebra | Introduction To Algebra | Algebra I | Khan Academy

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Where did the word "Algebra" and its underlying ideas come from? Watch the next lesson: https://www.khanacademy.org/math/algebra/introduction-to-algebra/overview_hist_alg/v/abstract-ness?utm_source=YT&utm_medium=Desc&utm_campaign=AlgebraI Algebra I on Kha

• 12:07

### Algebra Basics: What Is Algebra? - Math Antics

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The first video in the Algebra Basics Series: https://www.youtube.com/watch?v=NybHckSEQBI&list=PLUPEBWbAHUszT_GebJK23JHdd_Bss1N-G Next video: https://youtu.be/l3XzepN03KQ This video gives an overview of Algebra and introduces the concepts of unknown value

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• 07:00

### Abstract-ness | Introduction To Algebra | Algebra I | Khan Academy

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The general idea behind the word 'abstract' Watch the next lesson: https://www.khanacademy.org/math/algebra/introduction-to-algebra/overview_hist_alg/v/the-beauty-of-algebra?utm_source=YT&utm_medium=Desc&utm_campaign=AlgebraI Missed the previous lesson? h

• 06:55

### What Are Variables, Expressions, And Equations? | Introduction To Algebra | Algebra I | Khan Academy

325 views / 0 likes - added

Learn what variables, expressions, and equations really are. Practice this lesson yourself on KhanAcademy.org right now: https://www.khanacademy.org/math/algebra/introduction-to-algebra/feel-for-equations-and-inequalit/e/dependent-and-independent-variable

• 08:41

### Math in the Simpsons: Homer's theorem

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After putting on some glasses he found in a toilet Homer feels very smart and declares: "The sum of the square root of any two sides of an iscosceles triangle is equal to the square root of the remaining side." Well, sounds like Pythagoras theorem but it'

• 15:10

### Entropy: Why the 2nd Law of Thermodynamics is a fundamental law of physics

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Why the fact that the entropy of the Universe always increases is a fundamental law of physics.

• 05:17

### How many ways are there to prove the Pythagorean theorem? - Betty Fei

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Check out our Patreon page: https://www.patreon.com/teded View full lesson: https://ed.ted.com/lessons/how-many-ways-are-there-to-prove-the-pythagorean-theorem-betty-fei What do Euclid, 12-year-old Einstein, and American President James Garfield have in c

• 01:37

### Using the Pythagorean Theorem

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u07_l1_t4_we1 Using the Pythagorean Theorem

• 03:48

### Pythagorean theorem with right triangle

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Pythagorean theorem with right triangle

• 08:22

### Is There a Fifth Fundamental Force? + Quantum Eraser Answer | Space Time | PBS Digital Studios

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Has a fifth fundamental force been discovered and how will this effect our understanding of the universe? Get your own Space Time t­shirt at http://bit.ly/1QlzoBi Tweet at us! @pbsspacetime Facebook: facebook.com/pbsspacetime Email us! pbsspacetime [at] g

• 02:55

### Pythagorean Theorem Application

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u07_l1_t4_we2 Pythagorean Theorem Application

• 13:03

### Pythagorean Theorem

398 views / 0 likes - added

Pythagorean Theorem More free lessons at: http://www.khanacademy.org/video?v=AEIzy1kNRqo

• 03:41

### Example finding distance with Pythagorean theorem

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Example finding distance with Pythagorean theorem

• 08:50

### Visual Pythagorean Theorem Proof

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Visual Pythagorean Theorem Proof - some basic geometry required

• 09:49

### Central Limit Theorem

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Introduction to the central limit theorem and the sampling distribution of the mean More free lessons at: http://www.khanacademy.org/video?v=JNm3M9cqWyc

• 04:32

### Pythagorean Theorem 1

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U07_L2_T1_we1 Pythagorean Theorem 1 More free lessons at: http://www.khanacademy.org/video?v=JVrkLIcA2qw Content provided by TheNROCproject.org - (c) Monterey Institute for Technology and Education

• 04:17

### Pythagorean Theorem 2

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U07_L2_T1_we2 Pythagorean Theorem 2 More free lessons at: http://www.khanacademy.org/video?v=O64YFlX1_aI Content provided by TheNROCproject.org - (c) Monterey Institute for Technology and Education

• 03:00

### Pythagorean Theorem 3

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U07_L2_T1_we3 Pythagorean Theorem 3 More free lessons at: http://www.khanacademy.org/video?v=T0IOrRETWhI Content provided by TheNROCproject.org - (c) Monterey Institute for Technology and Education

• 04:06

### The ‘Ham Sandwich Theorem’ Will Change How You See the Universe… Seriously

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Ham sandwiches are delicious, but they’re also pretty useful when it comes to understanding the universe. Is Anything Truly Random? - https://youtu.be/tClZGWlRLoE Read More: The Ham Sandwich Theorem Is a Delicious and Puzzling Mathematical Principle https

• 12:14

### Using the Convolution Theorem to Solve an Initial Value Prob

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Using the Convolution Theorem to solve an initial value problem More free lessons at: http://www.khanacademy.org/video?v=rfyq32mHcYs

• 17:35

### Bell's Theorem: The Quantum Venn Diagram Paradox

358 views / 0 likes - added

Featuring 3Blue1Brown Watch the 2nd video on 3Blue1Brown here: https://www.youtube.com/watch?v=MzRCDLre1b4 Support MinutePhysics on Patreon! http://www.patreon.com/minutephysics Link to Patreon Supporters: http://www.minutephysics.com/supporters/ This vid

• 12:14

### Algebra Basics: Exponents In Algebra - Math Antics

401 views / 0 likes - added

Part of the Algebra Basics Series: https://www.youtube.com/watch?v=NybHckSEQBI&list=PLUPEBWbAHUszT_GebJK23JHdd_Bss1N-G Previous video: https://youtu.be/K6ewhnaL4KQ This video shows how exponents can be used more generally with variables. It explains why x

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• 06:16

### The Phenomenon of the Missing Fundamental

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Why do some higher frequencies sound like they have lower pitch than lower frequency sounds? Engineer and music lover Shaun Fitzgerald explores the phenomenon of the missing fundamental.Subscribe for regular science videos: http://bit.ly/RiSubscRibeShaun

• 10:04

### The No Cloning Theorem

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Support MinutePhysics on Patreon: http://www.patreon.com/minutephysics Three Blue One Brown: https://www.youtube.com/channel/UCYO_jab_esuFRV4b17AJtAw Why you can’t clone Schrödinger’s cat: this video presents the full proof of the “No Cloning” Theorem in

• 05:06

### The Pizza Theorem

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Watch my newest video, "The Game You Win By Losing (Parrondo's Paradox)": https://youtu.be/PpvboBJEozMGet Vsauce's favorite science and math toys delivered to your door!https://www.curiositybox.com/National Pizza Day is Saturday, February 9!*** LINKS ***T

• 09:31

### Fold And Cut Theorem - Numberphile

381 views / 0 likes - added

Lynda free trial (try the typography stuff!!): http://www.lynda.com/numberphile Katie Steckles discusses the Fold and Cut Theorem - from A to Z. Katie: http://www.katiesteckles.co.uk More on the topic: http://erikdemaine.org/foldcut/ NUMBERPHILE Website:

• 09:28

### The Heart Of Fermat's Last Theorem - Numberphile

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Modularity... Simon Pampena gets to the heart of proving Fermat's Last Theorem. Audible: www.audible.com/numberphile More Numberphile videos on Fermat: http://bit.ly/fermat_videos Simon Pampena is Australia's Numeracy Ambassador --- https://twitter.com/ma

• 09:31

### Fold and Cut Theorem - Numberphile

278 views / 0 likes - added

Lynda free trial (try the typography stuff!!): http://www.lynda.com/numberphile Katie Steckles discusses the Fold and Cut Theorem - from A to Z. More links & stuff in full description below ↓↓↓ Katie: http://www.katiesteckles.co.uk More

• 14:18

### The Four Color Map Theorem - Numberphile

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This video supported by Squarespace: https://www.squarespace.com/numberphile The Four Color Map Theorem (or colour!?) was a long-standing problem until it was cracked in 1976 using a "new" method... computers! A little bit of extra footage from this: http

• 13:44

### New Fundamental Particle Discovered?? + Challenge Winners! | Space Time | PBS Digital Studios

287 views / 1 likes - added

Be sure to check out Matt’s AMA at https://www.reddit.com/r/science on Monday, June 13th. He’ll be discussing the upcoming documentary he was a part of Distant Quasars: Shedding Light on Black Holes http://www.amnh.org/explore/science-bulletins/(watch)/as

• 10:30

### Four Fundamental Forces

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Gravity, Weak, Electromagnetic and Strong More free lessons at: http://www.khanacademy.org/video?v=FEF6PxWOvsk

• 13:53

### Gödel's Incompleteness Theorem - Numberphile

255 views / 0 likes - added

Marcus du Sautoy discusses Gödel's Incompleteness Theorem More links & stuff in full description below ↓↓↓ Extra Footage Part One: https://youtu.be/mccoBBf0VDM Extra Footage Part Two: https://youtu.be/7DtzChPqUAw Professor du Sautoy is Simonyi Professor f

• 06:17

### Solving Percent Problems | Decimals | Pre-Algebra | Khan Academy

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We'll use algebra to solve this percent problem. Watch the next lesson: https://www.khanacademy.org/math/pre-algebra/decimals-pre-alg/percent-word-probs-pre-alg/v/solving-percent-problems-2?utm_source=YT&utm_medium=Desc&utm_campaign=PreAlgebra Missed the

• 12:49

### Scientific Notation Examples | Pre-Algebra | Khan Academy

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• 03:03

### Introduction To Exponents | Pre-Algebra | Khan Academy

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Taking an exponent is basically the act of repeated multiplication. You know how to multiply, right? If so, understanding exponents is completely within your grasp! Practice this lesson yourself on KhanAcademy.org right now: https://www.khanacademy.org/ma

• 03:04

### How To Create A Function From An Equation (example) | Functions | Algebra I | Khan Academy

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Sal find the formula of a function that, given an input value "b," outputs a value "a" that satisfies the equation 4a+7b=-52. Practice this lesson yourself on KhanAcademy.org right now: https://www.khanacademy.org/math/algebra/algebra-functions/functions-

• 03:21

### Introduction To Perimeter | Measurement | Pre-Algebra | Khan Academy

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Find perimeter by adding side-lengths of various figures. Practice this lesson yourself on KhanAcademy.org right now: https://www.khanacademy.org/math/pre-algebra/measurement/perimeter/e/perimeter_1?utm_source=YT&utm_medium=Desc&utm_campaign=PreAlgebra Wa

• 01:40

### How To Match Function Input To Output Given The Formula (example) | Algebra I | Khan Academy

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Sal finds the input value for which f(t)=13, given that f(t)=-2t+5. Practice this lesson yourself on KhanAcademy.org right now: https://www.khanacademy.org/math/algebra/algebra-functions/function-inputs-and-outputs/e/functions_matching_inputs_outputs?utm_

• 05:27

### Converting Directly From Binary To Hexadecimal | Pre-Algebra | Khan Academy

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• 10:29

### Algebra Basics: Solving 2-Step Equations - Math Antics

629 views / 1 likes - added

There was a confusing example in the original video. This is the updated version. This video shows students how to solve 2-step Algebra equations involving one addition or subtraction and one multiplication or division. Part of the Algebra Basics Series:

• 03:33

### Finding A Percentage | Decimals | Pre-Algebra | Khan Academy

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Once again, fractions are our friends as we use them to find a percentage. You'll also see a couple of different ways to arrive at the answer. Practice this lesson yourself on KhanAcademy.org right now: https://www.khanacademy.org/math/pre-algebra/decimal

• 01:07

### How To Match Function Input To Output Given The Graph (example) | Algebra I | Khan Academy

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Sal finds the input value for which g(x)=-2 given the graph of g. Practice this lesson yourself on KhanAcademy.org right now: https://www.khanacademy.org/math/algebra/algebra-functions/function-inputs-and-outputs/e/functions_matching_inputs_outputs?utm_so

• 04:20

### Dividing A Whole Number By A Decimal | Decimals | Pre-Algebra | Khan Academy

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When dividing a whole number by a decimal, you're going to need to change that decimal into a whole number. How? We'll show you. Practice this lesson yourself on KhanAcademy.org right now: https://www.khanacademy.org/math/pre-algebra/decimals-pre-alg/divi

• 20:48

### Introduction To Scientific Notation | Pre-Algebra | Khan Academy

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Introduction to scientific notation. An in-depth discussion about why and how scientific notation is used. Practice this lesson yourself on KhanAcademy.org right now: https://www.khanacademy.org/math/pre-algebra/exponents-radicals/scientific-notation/e/sc

• 05:37

### Linear Models Example 2 | Algebra I | Khan Academy

301 views / 0 likes - added

Marbles and water in tank Practice this lesson yourself on KhanAcademy.org right now: https://www.khanacademy.org/math/algebra/two-var-linear-equations-and-intro-to-functions/linear-functions-modeling/e/constructing-and-interpreting-linear-functions?utm_s

• 09:17

### Unit Conversion Within The Metric System | Pre-Algebra | Khan Academy

372 views / 0 likes - added

Metric unit conversion Watch the next lesson: https://www.khanacademy.org/math/pre-algebra/rates-and-ratios/metric-system-tutorial/v/converting-within-the-metric-system?utm_source=YT&utm_medium=Desc&utm_campaign=PreAlgebra Missed the previous lesson? http

• 03:36

### Approximating Irrational Number Exercise Example | Pre-Algebra | Khan Academy

344 views / 0 likes - added

Practice this lesson yourself on KhanAcademy.org right now: https://www.khanacademy.org/math/pre-algebra/order-of-operations/rational-irrational-numbers/e/approximating-irrational-numbers?utm_source=YT&utm_medium=Desc&utm_campaign=PreAlgebra Watch the nex

• 03:24

### How To Interpret An Expression With Function Notation | Functions | Algebra I | Khan Academy

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Sal interprets the expression M(30)-M(0)=100 where M models an account balance over time. Practice this lesson yourself on KhanAcademy.org right now: https://www.khanacademy.org/math/algebra/algebra-functions/interpreting-function-notation/e/function-nota

• 10:00

### Introduction To Number Systems And Binary | Pre-Algebra | Khan Academy

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• 04:07

387 views / 0 likes - added

Learn how to add and subtract negative numbers. The problems solved in this video are 2 - 3 = -1 and -2 - 3 = -5 and -2 + 3 = 1 and 2 - (-3) = 5 and -2 - (-3). Practice this lesson yourself on KhanAcademy.org right now: https://www.khanacademy.org/math/pr

• 05:20

### Order Of Operations: PEMDAS | Arithmetic Properties | Pre-Algebra | Khan Academy

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Work through another challenging order of operations example with only positive numbers. Practice this lesson yourself on KhanAcademy.org right now: https://www.khanacademy.org/math/pre-algebra/order-of-operations/order_of_operations/e/order_of_operations

• 09:16

447 views / 0 likes - added

• 08:13

### Prime Numbers | Factors And Multiples | Pre-Algebra | Khan Academy

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What does it mean to be a prime number? Let's progress though some whole numbers and ask ourselves if they meet the criteria. What is the criteria you ask? Watch. Practice this lesson yourself on KhanAcademy.org right now: https://www.khanacademy.org/math

• 02:36

### How To Interpret An Expression With Function Notation | Functions | Algebra I | Khan Academy

415 views / 0 likes - added

Sal interprets the expression P(5) minor P(9) where P models the number of people at the beach over time. Practice this lesson yourself on KhanAcademy.org right now: https://www.khanacademy.org/math/algebra/algebra-functions/interpreting-function-notation

• 03:00

### Inverse Property Of Addition | Arithmetic Properties | Pre-Algebra | Khan Academy

460 views / 0 likes - added

The simple idea that a number plus its negative is 0 Watch the next lesson: https://www.khanacademy.org/math/pre-algebra/order-of-operations/arithmetic_properties/v/inverse-property-of-multiplication?utm_source=YT&utm_medium=Desc&utm_campaign=PreAlgebra M

• 06:56

### Exponents And Powers Of Zero Patterns | Pre-Algebra | Khan Academy

430 views / 0 likes - added

Now that we understand how to interpret an exponent and how the patterns in zeros are related to the exponent, we can solve more complicated problems! Practice this lesson yourself on KhanAcademy.org right now: https://www.khanacademy.org/math/pre-algebra

• 03:43

### Converting From Decimal To Hexadecimal Representation | Pre-Algebra | Khan Academy

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• 18:59

### The Four Color Theorem | Coloring a Planar Graph

120 views / 0 likes - added

Train your problem solving skills today with SkillShare: https://skl.sh/upandatom3 Check out the video we did over on Willie's Channel! https://youtu.be/jwQlULjESTs Subscribe to Willie's Channel KhAnubis! https://www.youtube.com/user/tobirates The Four Co

• 02:07

### Percentage Of A Whole Number | Decimals | Pre-Algebra | Khan Academy

287 views / 0 likes - added

We hope you're beginning to see that there's more than one way to skin a cat. In other words, there are several different ways to solve problems involving percentages, decimals, and fractions. Watch as find the percentage of a whole number. Watch the next

• 02:48

### Adding In Binary | Applying Mathematical Reasoning | Pre-Algebra | Khan Academy

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• 07:51

### Volume: How To Measure It | Measurement | Pre-Algebra | Khan Academy

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Volume is a measurement in the 3rd dimension. This means that it not only has width and height, but it has depth as well. Let's watch this video in which we get a great explanation of how we measure volume. Practice this lesson yourself on KhanAcademy.org

• 01:34

### Solving Ratio Problems With Graph | Pre-Algebra | Khan Academy

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In this example we'll plot points on the x and y axis to reflect the given ratios. Practice this lesson yourself on KhanAcademy.org right now: https://www.khanacademy.org/math/pre-algebra/rates-and-ratios/ratios_and_proportions/e/solving-ratio-problems-wi

• 02:04

### Ratio Word Problem: Boys To Girls | Pre-Algebra | Khan Academy

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In this example, we are given a ratio and then asked to apply that ratio to solve a problem. No problem! Practice this lesson yourself on KhanAcademy.org right now: https://www.khanacademy.org/math/pre-algebra/rates-and-ratios/ratios_and_proportions/e/rat

• 09:35 Popular

### Algebra Basics: Solving Basic Equations Part 2 - Math Antics

937 views / 0 likes - added

Part of the Algebra Basics Series: https://www.youtube.com/watch?v=NybHckSEQBI&list=PLUPEBWbAHUszT_GebJK23JHdd_Bss1N-G Previous video: https://youtu.be/l3XzepN03KQ Next video: Coming Soon This video shows students how to solve simple 1-step Algebra equati

• 02:49

### Percent Word Problem Example 2 | Decimals | Pre-Algebra | Khan Academy

343 views / 0 likes - added

It's nice to practice conversion problems, but how about applying our new knowledge of percentages to a real life problem like recycling? Hint: don't forget your long division! Practice this lesson yourself on KhanAcademy.org right now: https://www.khanac

• 03:09

### Simplifying Square Roots | Exponents, Radicals, And Scientific Notation | Pre-Algebra | Khan Academy

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• 05:05

### Solving Ratio Problems With Tables Example 1 | Pre-Algebra | Khan Academy

302 views / 0 likes - added

We're displaying ratios in a table format here, and then asking: given a ratio, solve for equivalent ratios. Here are a few examples to practice on. Practice this lesson yourself on KhanAcademy.org right now: https://www.khanacademy.org/math/pre-algebra/r

• 06:14

### How To Plot Inequalities On A Number Line | Pre-Algebra | Khan Academy

405 views / 0 likes - added

Learn how to graph an inequality on a number line to indicate which values make it true. Practice this lesson yourself on KhanAcademy.org right now: https://www.khanacademy.org/math/pre-algebra/applying-math-reasoning-topic/greater-than-less-than/e/writin

• 08:34

### LCM And GCF Word Problems | Factors And Multiples | Pre-Algebra | Khan Academy

398 views / 1 likes - added

Here we have a couple of word problems--one searching for the least common multiple and the other for the greatest common factor. Just read them with us slowly and follow along. You'll get it. Practice this lesson yourself on KhanAcademy.org right now: ht

• 04:17

### Introduction To Area And Unit Squares | Measurement | Pre-Algebra | Khan Academy

317 views / 0 likes - added

Cover figures with square units to find their area. Practice this lesson yourself on KhanAcademy.org right now: https://www.khanacademy.org/math/pre-algebra/measurement/area-basics/e/measuring-area-with-unit-squares?utm_source=YT&utm_medium=Desc&utm_campa

• 04:31

### Number Patterns: Interpreting Relationships | Pre-Algebra | Khan Academy

339 views / 0 likes - added

Examining the points on a number line and interpreting the patterns to discover the relationships. Practice this lesson yourself on KhanAcademy.org right now: https://www.khanacademy.org/math/pre-algebra/applying-math-reasoning-topic/number-patterns/e/vis

• 08:52

### Linear Models Example 1 | Algebra I | Khan Academy

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• 07:34

### Hexadecimal Number System | Applying Mathematical Reasoning | Pre-Algebra | Khan Academy

430 views / 0 likes - added

• 04:16

### Least Common Multiple Exercise | Factors And Multiples | Pre-Algebra | Khan Academy

420 views / 0 likes - added

We're practicing finding the least common multiple in these example exercises. We'll teach you the prime factorization approach which is a pretty nifty way to find the lcm (least common multiple). Practice this lesson yourself on KhanAcademy.org right now

• 03:52

### Converting From Decimal To Binary | Applying Mathematical Reasoning | Pre-Algebra | Khan Academy

426 views / 0 likes - added

Watch the next lesson: https://www.khanacademy.org/math/pre-algebra/applying-math-reasoning-topic/alternate-number-bases/v/large-number-decimal-to-binary?utm_source=YT&utm_medium=Desc&utm_campaign=PreAlgebra Missed the previous lesson? https://www.khanaca

• 00:52

### Reading Bar Charts: Basic Example | Applying Mathematical Reasoning | Pre-Algebra | Khan Academy

347 views / 0 likes - added

Let's start with this bar chart that brings back the days of Harry Potter! Putting our toes in the water on this one... Practice this lesson yourself on KhanAcademy.org right now: https://www.khanacademy.org/math/pre-algebra/applying-math-reasoning-topic/

• 02:40

### Interpreting Linear Formulas Example 1 | Algebra I | Khan Academy

422 views / 0 likes - added

Interpreting a linear formula Practice this lesson yourself on KhanAcademy.org right now: https://www.khanacademy.org/math/algebra/two-var-linear-equations-and-intro-to-functions/interpreting_linear_functions/e/interpreting-features-of-linear-functions?ut

• 08:23

### Constructing Linear Functions Example 2 | Algebra I | Khan Academy

286 views / 0 likes - added

Linear model for painting Practice this lesson yourself on KhanAcademy.org right now: https://www.khanacademy.org/math/algebra/two-var-linear-equations-and-intro-to-functions/linear-functions-modeling/e/constructing-linear-functions-word-problems?utm_sour

• 09:43

### Exponent Rules Part 1 | Exponents, Radicals, And Scientific Notation | Pre-Algebra | Khan Academy

436 views / 0 likes - added

• 02:35

### Interpreting Linear Formulas Example 2 | Algebra I | Khan Academy

305 views / 0 likes - added

Linear equation for file transfer Practice this lesson yourself on KhanAcademy.org right now: https://www.khanacademy.org/math/algebra/two-var-linear-equations-and-intro-to-functions/interpreting_linear_functions/e/interpreting-features-of-linear-function

• 05:02

### Positive And Negative Slope | Algebra I | Khan Academy

363 views / 0 likes - added

Positive and negative slope Watch the next lesson: https://www.khanacademy.org/math/algebra/two-var-linear-equations-and-intro-to-functions/slope/v/similar-triangles-to-prove-that-the-slope-is-constant-for-a-line?utm_source=YT&utm_medium=Desc&utm_campaign

• 06:35

### Constructing Linear Functions Example 1 | Algebra I | Khan Academy

412 views / 0 likes - added

Linear model for ice sheet thickness Practice this lesson yourself on KhanAcademy.org right now: https://www.khanacademy.org/math/algebra/two-var-linear-equations-and-intro-to-functions/linear-functions-modeling/e/constructing-linear-functions-word-proble

• 03:12

### Graphing Linear Functions Example 2 | Algebra I | Khan Academy

352 views / 0 likes - added

Graphing equation for filling pool Practice this lesson yourself on KhanAcademy.org right now: https://www.khanacademy.org/math/algebra/two-var-linear-equations-and-intro-to-functions/linear-functions-modeling/e/graphing-linear-functions-word-problems?utm

• 03:28

### Inequality Word Problems | Applying Mathematical Reasoning | Pre-Algebra | Khan Academy

466 views / 0 likes - added

We're writing inequalities by using information from the word problems. Woohoo! Practice this lesson yourself on KhanAcademy.org right now: https://www.khanacademy.org/math/pre-algebra/applying-math-reasoning-topic/greater-than-less-than/e/writing-numeric

• 06:20

### Greatest Common Factor Explained | Factors And Multiples | Pre-Algebra | Khan Academy

317 views / 0 likes - added

Here's a nice explanation of least common factor (or least common divisor) along with a few practice example exercises. Let's roll. Practice this lesson yourself on KhanAcademy.org right now: https://www.khanacademy.org/math/pre-algebra/factors-multiples/

• 05:26

### Factors And Divisibility In Algebra

287 views / 0 likes - added

Factors and divisibility in algebra

• 11:08 Popular

### Algebra Basics: Solving Basic Equations Part 1 - Math Antics

1,031 views / 3 likes - added

Part of the Algebra Basics Series: https://www.youtube.com/watch?v=NybHckSEQBI&list=PLUPEBWbAHUszT_GebJK23JHdd_Bss1N-G Previous video: https://youtu.be/NybHckSEQBI Next video: https://youtu.be/Qyd_v3DGzTM This video shows students how to solve simple 1-st

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• 05:41

### Math Patterns Example 2 | Applying Mathematical Reasoning | Pre-Algebra | Khan Academy

399 views / 0 likes - added

We continue to strengthen our skill in identifying patterns. This time we'll use a table to track the pattern. Practice this lesson yourself on KhanAcademy.org right now: https://www.khanacademy.org/exercise/math-patterns?utm_source=YT&utm_medium=Desc&utm

• 03:38

### Math Patterns Example 1 | Applying Mathematical Reasoning | Pre-Algebra | Khan Academy

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Part of our exploration of math is learning to identify patterns among numbers. Can you see the pattern in this example? Practice this lesson yourself on KhanAcademy.org right now: https://www.khanacademy.org/exercise/math-patterns?utm_source=YT&utm_mediu

• 35:56

### Thermodynamics and the End of the Universe: Energy, Entropy, and the fundamental laws of physics.

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Easy to understand animation explaining energy, entropy, and all the basic concepts including refrigeration, heat engines, and the end of all life in the Universe.

• 02:36

### Number Patterns: Seeing Relationships | Applying Mathematical Reasoning | Pre-Algebra | Khan Academy

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Laying the foundation for algebraic thinking by learning to recognize the relationships between patterns and graphing out those relationships. Practice this lesson yourself on KhanAcademy.org right now: https://www.khanacademy.org/math/pre-algebra/applyin

• 05:30

### Graphing Linear Functions Example 1 | Algebra I | Khan Academy

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Learn how graph a linear function. This video gives an example of graphing fuel consumption as a function of distance. Practice this lesson yourself on KhanAcademy.org right now: https://www.khanacademy.org/math/algebra/two-var-linear-equations-and-intro-

• 03:40

### Multi-step Word Problem With Decimals And Subtraction | Pre-Algebra | Khan Academy

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First visualize this word problem then use subtraction and multiplication of decimals and fractions to get at the answer. Practice this lesson yourself on KhanAcademy.org right now: https://www.khanacademy.org/math/pre-algebra/applying-math-reasoning-topi

• 08:21

### Two-variable Linear Equations And Their Graphs | Algebra I | Khan Academy

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Introduction to 2-variable linear equations and their graphs Watch the next lesson: https://www.khanacademy.org/math/algebra/two-var-linear-equations-and-intro-to-functions/solutions-to-two-var-linear-equations/v/checking-ordered-pair-solutions-to-equatio

• 05:34

### Multiplying Positive And Negative Numbers | Pre-Algebra | Khan Academy

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Learn some rules of thumb for multiplying positive and negative numbers. Practice this lesson yourself on KhanAcademy.org right now: https://www.khanacademy.org/math/arithmetic/absolute-value/mult_div_negatives/e/multiplying_and_dividing_negative_numbers?

• 02:27

### Inequality Word Problem: One Variable | Applying Mathematical Reasoning | Pre-Algebra | Khan Academy

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This time we're creating a variable to represent a number, and then writing an inequality. We're building on our knowledge. Practice this lesson yourself on KhanAcademy.org right now: https://www.khanacademy.org/math/pre-algebra/applying-math-reasoning-to

• 02:27

### Checking Ordered Pair Solutions To Equations Example 2 | Algebra I | Khan Academy

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Second example of ordered pair solutions Practice this lesson yourself on KhanAcademy.org right now: https://www.khanacademy.org/math/algebra/two-var-linear-equations-and-intro-to-functions/solutions-to-two-var-linear-equations/e/plugging_in_values?utm_so

• 07:11

### Graphing Solutions To Two-variable Linear Equations Example 2 | Algebra I | Khan Academy

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Graphing solutions to 2 variable linear equations Practice this lesson yourself on KhanAcademy.org right now: https://www.khanacademy.org/math/algebra/two-var-linear-equations-and-intro-to-functions/solutions-to-two-var-linear-equations/e/graphing-solutio

• 02:35

### Checking Ordered Pair Solutions To Equations Example 1 | Algebra I | Khan Academy

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Checking ordered pair solutions to equations Practice this lesson yourself on KhanAcademy.org right now: https://www.khanacademy.org/math/algebra/two-var-linear-equations-and-intro-to-functions/solutions-to-two-var-linear-equations/e/plugging_in_values?ut

• 05:09

### Converting From Slope-intercept To Standard Form | Algebra I | Khan Academy

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Converting from slope-intercept to standard form Practice this lesson yourself on KhanAcademy.org right now: https://www.khanacademy.org/math/algebra/two-var-linear-equations-and-intro-to-functions/standard-form/e/converting_between_slope_intercept_and_st

• 19:53

### Linear Algebra - Matrix Transformations

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Matrix multiplication and linear algebra explained with 3D animations.

• 08:30

### Multiplying And Dividing Negative Numbers | Pre-Algebra | Khan Academy

418 views / 0 likes - added

Multiplying and dividing negative numbers Watch the next lesson: https://www.khanacademy.org/math/arithmetic/absolute-value/abs_value_tutorial/v/absolute-value-and-number-lines?utm_source=YT&utm_medium=Desc&utm_campaign=PreAlgebra Missed the previous less

• 03:21

### Rational Number Word Problem With Fractions | Pre-Algebra | Khan Academy

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Word problems force us to put concepts to work using real-world applications. In this example, determine the volume of frozen water and express the answer as a fraction. Practice this lesson yourself on KhanAcademy.org right now: https://www.khanacademy.o

• 07:08

### Early Train Word Problem | Linear Equations | Algebra I | Khan Academy

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Fun word problem that is almost a brain teaser. Watch the next lesson: https://www.khanacademy.org/math/algebra/solving-linear-equations-and-inequalities/More-equation-practice/v/patterns-in-sequences-1?utm_source=YT&utm_medium=Desc&utm_campaign=AlgebraI

• 09:50

### Adding And Subtracting Fractions | Fractions | Pre-Algebra | Khan Academy

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• 03:53

### Plotting Basic Fractions On The Number Line | Fractions | Pre-Algebra | Khan Academy

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Practice this lesson yourself on KhanAcademy.org right now: https://www.khanacademy.org/math/pre-algebra/fractions-pre-alg/understanding-fractions-pre-alg/e/fractions_on_the_number_line_1?utm_source=YT&utm_medium=Desc&utm_campaign=PreAlgebra Watch the nex

• 04:33

### Multiplying Negative And Positive Fractions | Fractions | Pre-Algebra | Khan Academy

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See examples of multiplying and dividing fractions with negative numbers. Practice this lesson yourself on KhanAcademy.org right now: https://www.khanacademy.org/math/pre-algebra/fractions-pre-alg/multiplying-fractions-pre-alg/e/multiplying_fractions?utm_

• 02:39

### Comparing Decimals: Ordering From Least To Greatest | Decimals | Pre-Algebra | Khan Academy

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This is a fun example where we reorder decimals from smallest to largest. You're looking for the place value that is the most significant, and then working backwards. Practice this lesson yourself on KhanAcademy.org right now: https://www.khanacademy.org/

• 06:29

### Multiplying Decimals: Place Value And Reordering | Decimals | Pre-Algebra | Khan Academy

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We want you to develop an intuition about how to work with decimals. Understanding how you can rewrite decimals by considering the place value will help you multiply! Practice this lesson yourself on KhanAcademy.org right now: https://www.khanacademy.org/

• 03:50

### Introduction To Multiplying Decimals | Decimals | Pre-Algebra | Khan Academy

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Multiplying decimals can be confusing because there's always the question as to where the decimals goes in the answer. We're about to show you so you'll never have to question it again! Practice this lesson yourself on KhanAcademy.org right now: https://w

• 05:51

### Equivalent Fractions | Fractions | Pre-Algebra | Khan Academy

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Introduces the concept of equivalent fractions Practice this lesson yourself on KhanAcademy.org right now: https://www.khanacademy.org/math/pre-algebra/fractions-pre-alg/equivalent-fractions-pre-alg/e/equivalent_fractions?utm_source=YT&utm_medium=Desc&utm

• 10:07

### The Beauty of Algebra

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Why the abstraction of mathematics is so fundamental More free lessons at: http://www.khanacademy.org/video?v=kpCJyQ2usJ4

• 05:42

### Understanding Division Of Fractions | Fractions | Pre-Algebra | Khan Academy

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Using a number line, we'll explain the rule of "invert and multiply" when dividing two fractions. Practice this lesson yourself on KhanAcademy.org right now: https://www.khanacademy.org/math/pre-algebra/fractions-pre-alg/div-fractions-fractions-pre-alg/e/

• 09:23

### Converting Fractions To Decimals | Decimals | Pre-Algebra | Khan Academy

472 views / 1 likes - added

How to express a fraction as a decimal Practice this lesson yourself on KhanAcademy.org right now: https://www.khanacademy.org/math/pre-algebra/decimals-pre-alg/decimal-to-fraction-pre-alg/e/converting_fractions_to_decimals?utm_source=YT&utm_medium=Desc&u

• 03:08

### Multiplying Unit Fractions And Whole Numbers | Fractions | Pre-Algebra | Khan Academy

458 views / 1 likes - added

Don't let multiplying whole numbers and fractions get you down. We got this. This explanation will help you become a pro. Practice this lesson yourself on KhanAcademy.org right now: https://www.khanacademy.org/math/pre-algebra/fractions-pre-alg/multiplyin

• 09:15

### Mixed Numbers And Improper Fractions | Fractions | Pre-Algebra | Khan Academy

503 views / 1 likes - added

Converting mixed numbers to improper fractions and improper fractions to mixed numbers Practice this lesson yourself on KhanAcademy.org right now: https://www.khanacademy.org/math/pre-algebra/fractions-pre-alg/mixed-numbers-pre-alg/e/converting_mixed_numb

• 01:11

### Subtracting Decimals: Example 1 | Decimals | Pre-Algebra | Khan Academy

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Subtracting decimals...up to the hundredths placement. Line up those decimals before you start. Practice this lesson yourself on KhanAcademy.org right now: https://www.khanacademy.org/math/pre-algebra/decimals-pre-alg/adding-decimals-pre-alg/e/subtracting

• 09:29

### Dividing Decimals With Hundredths Example 3 | Decimals | Pre-Algebra | Khan Academy

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The old saying is "practice makes perfect." Let's keep practicing dividing decimals and making our divisor a whole number. Practice this lesson yourself on KhanAcademy.org right now: https://www.khanacademy.org/math/pre-algebra/decimals-pre-alg/dividing-d

• 14:13

### Introduction To Ratios | Ratios, Proportions, Units, And Rates | Pre-Algebra | Khan Academy

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What a ratio is. Simple ratio problems. Practice this lesson yourself on KhanAcademy.org right now: https://www.khanacademy.org/math/pre-algebra/rates-and-ratios/ratios_and_proportions/e/ratio_word_problems?utm_source=YT&utm_medium=Desc&utm_campaign=PreAl

• 02:35

### Dividing Whole Numbers And Fractions: Studying | Fractions | Pre-Algebra | Khan Academy

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Solve a word problem by dividing a fraction by a whole number. The example used in this video is 1/5 ÷ 4. Practice this lesson yourself on KhanAcademy.org right now: https://www.khanacademy.org/math/pre-algebra/fractions-pre-alg/dividing-fractions-pre-alg

• 04:51

### Cube Root Of A Non-perfect Cube | Pre-Algebra | Khan Academy

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• 04:24

### Example Of Subtracting Fractions With Unlike Denominators | Fractions | Pre-Algebra | Khan Academy

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If you conquered adding fractions with different denominators, then subtracting fractions will be a snap. Don't worry...we'll take it slow and explain every step. Practice this lesson yourself on KhanAcademy.org right now: https://www.khanacademy.org/math

• 09:45

454 views / 1 likes - added

• 10:10

### IIT JEE Hairy Trig and Algebra (part 1)

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2010 Paper 1 problem 38 Hairy Trig and Algebra.avi More free lessons at: http://www.khanacademy.org/video?v=dOxXl_6BDQc

• 09:54

### IIT JEE Hairy Trig and Algebra (Part 2)

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2010 IIT JEE Paper 1 #38 Hairy Trig and Algebra (Part 2) More free lessons at: http://www.khanacademy.org/video?v=6t9ogglXNIM

• 06:28

### IIT JEE Hairy Trig and Algebra (Part 3)

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2010 IIT JEE Paper 1 #38 Hairy Trig and Algebra (Part 3) More free lessons at: http://www.khanacademy.org/video?v=KVRpXvrsSKM

• 02:32

### Dividing Whole Numbers And Fractions: Potpourri | Fractions | Pre-Algebra | Khan Academy

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Solve a word problem by dividing a whole number by a fraction. The example used in this video is 4 ÷ 1/5. Practice this lesson yourself on KhanAcademy.org right now: https://www.khanacademy.org/math/pre-algebra/fractions-pre-alg/dividing-fractions-pre-alg

• 04:25

### Multiplying Challenging Decimals | Decimals | Pre-Algebra | Khan Academy

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Sometimes multiplying really small decimals (with all those zeros!) can be a little intimidating. Watch as we show you a handy trick to simplify these problems and solve them. Practice this lesson yourself on KhanAcademy.org right now: https://www.khanaca

• 07:14

### Negative Exponents | Exponents, Radicals, And Scientific Notation | Pre-Algebra | Khan Academy

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How does a negative exponent affect our answer? Before you assume that the answer must be negative, think again! Practice this lesson yourself on KhanAcademy.org right now: https://www.khanacademy.org/math/pre-algebra/exponents-radicals/negative-exponents

• 02:36

### Converting Decimals To Percents | Decimals | Pre-Algebra | Khan Academy

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Need to convert a decimal to a percent? Ok, we'll just use our fraction friends to get us there. Watch and be amazed. Practice this lesson yourself on KhanAcademy.org right now: https://www.khanacademy.org/math/pre-algebra/decimals-pre-alg/percent-intro-p

• 24:47

### Linear Algebra: Parametric Representations of Lines

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Linear Algebra: Parametric Representations of Lines in R2 and R3 More free lessons at: http://www.khanacademy.org/video?v=hWhs2cIj7Cw

• 03:45

### Visualizing Equivalent Fractions | Fractions | Pre-Algebra | Khan Academy

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To understand equivalent fractions it helps to "see" the fractions using something like a grid with shaded and unshaded sections representing the fraction. Practice this lesson yourself on KhanAcademy.org right now: https://www.khanacademy.org/math/pre-al

• 02:34

### Converting From Standard Form To Slope-intercept Form | Algebra I | Khan Academy

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Standard form to slope-intercept form Practice this lesson yourself on KhanAcademy.org right now: https://www.khanacademy.org/math/algebra/two-var-linear-equations-and-intro-to-functions/standard-form/e/slope-from-an-equation-in-standard-form?utm_source=Y

• 47:36

### Completing the square - Live algebra lesson

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Do you need help with your algebra homework? Send photos of any problems you need help with to LiveStream@MathMeeting.com. Today I am focusing on solving quadratic equations by completing the square. I will help you live right here on this live stream :)

• 09:36

### Negative Numbers Introduction | Negative Numbers And Absolute Value | Pre-Algebra | Khan Academy

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Mysterious negative numbers! What ARE they? They are numbers less than zero. If you understand the nature of below zero temperatures, you can understand negative numbers. We'll help. Practice this lesson yourself on KhanAcademy.org right now: https://www.

• 11:09

### Algebra Basics: What Are Polynomials? - Math Antics

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This video introduces students to polynomials and terms. Part of the Algebra Basics Series: https://www.youtube.com/watch?v=NybHckSEQBI&list=PLUPEBWbAHUszT_GebJK23JHdd_Bss1N-G Learn More at mathantics.com Visit http://www.mathantics.com for more Free math

• 04:00

### Finding Factors And Multiples | Factors And Multiples | Pre-Algebra | Khan Academy

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To find the factors of a number means to find all the whole numbers that the number in question is divisible by. Can you help us find the factors in this example? Practice this lesson yourself on KhanAcademy.org right now: https://www.khanacademy.org/math

• 10:59

### The Creation of Chemistry - The Fundamental Laws: Crash Course Chemistry #3

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Today's Crash Course Chemistry takes a historical perspective on the creation of the science, which didn't really exist until a super-smart, super-wealthy Frenchman put the puzzle pieces together - Hank tells the story of how we went from alchemists to ch

• 10:43 Popular

### Algebra Basics: Simplifying Polynomials - Math Antics

810 views / 1 likes - added

In this video, we explain the concept of "like terms" and show how polynomials can be simplified by combining like terms. Part of the Algebra Basics Series: https://www.youtube.com/watch?v=NybHckSEQBI&list=PLUPEBWbAHUszT_GebJK23JHdd_Bss1N-G Learn More at

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• 11:54 Popular

### Algebra Basics: The Distributive Property - Math Antics

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This video introduces the Distributive Property in its general algebraic form: a(b + c) = ab + ac It shows how this patten is helpful when working with polynomials. Part of the Algebra Basics Series: https://www.youtube.com/watch?v=NybHckSEQBI&list=PLUPEB

• 01:20

### The Hairy Ball Theorem

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Ever tried to comb a hairy ball? Math says you failed! Trying out a new feature: English Transcript! Let me know how it works Tweet it - http://bit.ly/sKAjpS Facebook it - http://on.fb.me/ujIFvN minutephysics is now on Google+ - http://bit.ly/qzEwc6 And f

• 58:25

### Birth Of A Theorem - With Cédric Villani

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Where does a mathematician’s inspiration come from? Fields Medal winner Cédric Villani takes us on a fantastical adventure through the beautiful, mysterious world of mathematics. Subscribe for regular science videos: http://bit.ly/RiSubscRibe What goes on

• 12:55 Popular

### Math Antics - The Pythagorean Theorem

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• 06:39

### Pythagoras Theorem Explained - Mathemagic with Bawa

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http://www.youtube.com/watch?v=49_TJymgXgM - Mathemagic - (a+b)²=a²+2ab+b² - But Why? One of the elementary formula in high school mathematics, most of us know this formula. But do we actually know why? In this video Khurshed Batliwala, fon

• 15:46

### Linear Algebra: Introduction to Linear Independence

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Linear Algebra: Introduction to linear dependence and independence More free lessons at: http://www.khanacademy.org/video?v=CrV1xCWdY-g

• 07:25

### Algebra Word Problem - Factoring

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Learn how to solve this algebra word problem by factoring. A garden has an area of 84 square feet and the length is 8 feet longer than the width. You must find the dimensions of the garden using factoring. My name is Chris and my passion is to teach math.

• 05:38

### Algebra word problem - System of Equations

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Solve this fun algebra word problem using a system of equations. If each jar has three cookies, one jar will be empty. If each jar has two cookies, there will be one cookie left over. Use a system of equations to find how many cookies and jars we have. My

• 04:09

### Easy algebra word problem - But can you solve it?

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Two workers can build a house in 4 days. One worker can build the house by himself in 6 days. How long would it take the other worker to build the house by himself? Can you solve this easy algebra word problem? My name is Chris and my passion is to teach

• 02:51 Popular

### The Horse Horseshoe Boots Viral Algebra Problem - The Correct Answer Explained

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A lot of people are arguing over the correct answer to this algebra problem involving horses, horseshoes, and boots. A Facebook post with this problem has over 500,000 comments. Can you figure it out? In this video I explain the correct answer. Blog post:

• 03:48

### Can You Solve This Harvard Admissions Question? Algebra Problem, 1869

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The Harvard admissions exam in 1869 included this algebra problem: "A man bought a watch, a chain, and a locket for \$216. The watch and locket together cost three times as much as the chain, and the chain and locket together cost half as much as the watch

• 07:28

### Algebra: Linear Equations 1

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equations of the form AX=B More free lessons at: http://www.khanacademy.org/video?v=bAerID24QJ0

• 06:07

### Algebra: Linear Equations 2

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solving equations of the form AX+B=C More free lessons at: http://www.khanacademy.org/video?v=DopnmxeMt-s

• 06:45

### Algebra: Linear Equations 3

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Linear equations with multiple variable and constant terms More free lessons at: http://www.khanacademy.org/video?v=Zn-GbH2S0Dk

• 10:01

### Linear Algebra: 3x3 Determinant

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Determinants: Finding the determinant of a 3x3 matrix More free lessons at: http://www.khanacademy.org/video?v=0c7dt2SQfLw

• 18:40

### Linear Algebra: nxn Determinant

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Defining the determinant for nxn matrices. An exampled of a 4x4 determinant. More free lessons at: http://www.khanacademy.org/video?v=H9BWRYJNIv4

• 13:25

### Linear Algebra: Another Least Squares Example

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Using least squares approximation to fit a line to points More free lessons at: http://www.khanacademy.org/video?v=QkepM8Vv3kw

• 04:22 Popular

### Impossible Algebra Problem

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This problem is making the rounds. Can you place numbers in the four boxes so all the equations are true? Blog post (text/image explanation): http://wp.me/p6aMk-4up If you like my videos, you can support me at Patreon: http://www.patreon.com/mindyourdecis

• 25:34

### Linear Algebra: Vector Examples

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Visually understanding basic vector operations More free lessons at: http://www.khanacademy.org/video?v=r4bH66vYjss

• 19:00

### Linear Algebra: Basis of a Subspace

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Understanding the definition of a basis of a subspace More free lessons at: http://www.khanacademy.org/video?v=zntNi3-ybfQ

• 16:34

### Linear Algebra: Exploring the solution set of Ax=b

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Exploring the solution set of Ax=b (non homogeneous equations) More free lessons at: http://www.khanacademy.org/video?v=1PsNIzUJPkc

• 18:20

### Linear Algebra: Formula for 2x2 inverse

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Figuring out the formula for a 2x2 matrix. Defining the determinant. More free lessons at: http://www.khanacademy.org/video?v=eEUK_ThrHuQ

• 16:55

### Linear Algebra: Determinant when row is added

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The determinant when one matrix has a row that is the sum of the rows of other matrices (and every other term is identical in the 3 matrices) More free lessons at: http://www.khanacademy.org/video?v=VrB3LaSD_uo

• 08:19

### Linear Algebra: Duplicate Row Determinant

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Determinant of a matrix with duplicate rows More free lessons at: http://www.khanacademy.org/video?v=gYv8sttBIqs

• 10:25

### Linear Algebra: Determinant after row operations

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What happens to the determinant when we perform a row operation More free lessons at: http://www.khanacademy.org/video?v=kpG7xySkivg

• 09:13

### Linear Algebra: Simpler 4x4 determinant

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Calculating a 4x4 determinant by putting in in upper triangular form first. More free lessons at: http://www.khanacademy.org/video?v=QV0jsTiobU4

• 08:37

### Linear Algebra: Transpose of a Matrix

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Transpose of a matrix More free lessons at: http://www.khanacademy.org/video?v=2t0003_sxtU

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### Linear Algebra: Determinant of Transpose

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Proof by induction that transposing a matrix does not change its determinant More free lessons at: http://www.khanacademy.org/video?v=x-GV2v0dRNE

• 12:07

### Linear Algebra: Transpose of a Vector

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Transpose of a column vector. Matrix-matrix products using vectors More free lessons at: http://www.khanacademy.org/video?v=lSoaMCNKfAg

• 22:08

### Linear Algebra: Orthogonal Complements

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Orthogonal Complements as subspaces. More free lessons at: http://www.khanacademy.org/video?v=QOTjdgmNqlg

• 09:27

### Linear Algebra: dim(V) + dim(orthogonoal complelent of V)=n

378 views / 0 likes - added

Showing that if V is a subspace of Rn, then dim(V) + dim(V's orthogonal complement) = n More free lessons at: http://www.khanacademy.org/video?v=pGhBfkBqok0

• 17:26

### Linear Algebra: Projections onto Subspaces

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Projections onto subspaces More free lessons at: http://www.khanacademy.org/video?v=5B8XluiqdHM

• 15:32

### Linear Algebra: Least Squares Approximation

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The least squares approximation for otherwise unsolvable equations More free lessons at: http://www.khanacademy.org/video?v=MC7l96tW8V8

• 18:50

### Linear Algebra: Least Squares Examples

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An example using the least squares solution to an unsolvable system More free lessons at: http://www.khanacademy.org/video?v=8mAZYv5wIcE

• 14:08

### Linear Algebra: Eigenvalues of a 3x3 matrix

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Determining the eigenvalues of a 3x3 matrix More free lessons at: http://www.khanacademy.org/video?v=11dNghWC4HI

• 18:53

### Linear Algebra: Vector Triangle Inequality

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Proving the triangle inequality for vectors in Rn More free lessons at: http://www.khanacademy.org/video?v=PsNidCBr5II

• 15:47

### Linear Algebra: Cross Product Introduction

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Introduction to the cross product More free lessons at: http://www.khanacademy.org/video?v=pJzmiywagfY

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### Linear Algebra: Matrix Product Examples

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Example of taking the product of two matrices More free lessons at: http://www.khanacademy.org/video?v=x1z0hOyjapU

• 18:54

### Linear Algebra: Introduction to the inverse of a function

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Introduction to the inverse of a function More free lessons at: http://www.khanacademy.org/video?v=-eAzhBZgq28

• 20:00

### Linear Algebra: Matrix condition for one-to-one trans

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Showing that the rank of the of an mxn transformation matrix has to be an for the transformation to be one-to-one (injective) More free lessons at: http://www.khanacademy.org/video?v=M3FuL9qKTBs

• 06:37

### Linear Algebra: Simplifying conditions for invertibility

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Showing that a transformation is invertible if and only if rref(A) is equal to the identity matrix More free lessons at: http://www.khanacademy.org/video?v=Yz2OosyMTmY

• 06:22

### Linear Algebra: Example of Finding Matrix Inverse

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Example of calculating the inverse of a matrix More free lessons at: http://www.khanacademy.org/video?v=r9aTLTN16V4

• 09:03

### Linear Algebra: Determinants along other rows/cols

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Finding the determinant by going along other rows or columns More free lessons at: http://www.khanacademy.org/video?v=nu87kfmwNfU

• 07:18

### Linear Algebra: Rule of Sarrus of Determinants

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A alternative "short cut" for calculating 3x3 determinants (Rule of Sarrus) More free lessons at: http://www.khanacademy.org/video?v=4xFIi0JF2AM

• 13:20

### Linear Algebra: Determinant when row multiplied by scalar

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The determinant when a row is multiplied by a scalar More free lessons at: http://www.khanacademy.org/video?v=32rdijPB-rA

• 02:52

### Linear Algebra: (correction) scalar muliplication of row

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Correction of last video showing that the determinant when one row is multiplied by a scalar is equal to the scalar times the determinant More free lessons at: http://www.khanacademy.org/video?v=WY6QG0mZ7uQ

• 08:07

### Linear Algebra: Upper Triangular Determinant

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The determinant of an upper triangular matrix More free lessons at: http://www.khanacademy.org/video?v=VX7K8iqoiRc

• 21:38

### Linear Algebra: Determinant and area of a parallelogram

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Realizing that the determinant of a 2x2 matrix is equal to the area of the parallelogram defined by the column vectors of the matrix More free lessons at: http://www.khanacademy.org/video?v=n-S63_goDFg

• 20:10

### Linear Algebra: Determinant as Scaling Factor

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Viewing the determinant of the transformation matrix as a scaling factor of regions More free lessons at: http://www.khanacademy.org/video?v=g3MqSdO5Ubc

• 08:50

### Linear Algebra: Transpose of a Matrix Product

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Taking the transpose of the product of two matrices More free lessons at: http://www.khanacademy.org/video?v=UdHgWK13x5I

• 08:41

### Linear Algebra: Transposes of sums and inverses

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Transposes of sums and inverses More free lessons at: http://www.khanacademy.org/video?v=Br_8t58mdeI

• 23:19

### Linear Algebra: Rowspace and Left Nullspace

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Rowspace and Left Nullspace More free lessons at: http://www.khanacademy.org/video?v=qBfc57x_RSg

• 13:04

### Linear Algebra: Subspace Projection Matrix Example

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Example of a transformation matrix for a projection onto a subspace More free lessons at: http://www.khanacademy.org/video?v=QTcSBB3uVP0

• 16:08

### Linear Algebra: Coordinates with Respect to a Basis

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Understanding alternate coordinate systems More free lessons at: http://www.khanacademy.org/video?v=uvgru6FcyxU

• 17:55

### Linear Algebra: Change of Basis Matrix

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Using a change of basis matrix to get us from one coordinate system to another. More free lessons at: http://www.khanacademy.org/video?v=1j5WnqwMdCk

• 11:16

### Linear Algebra: Introduction to Orthonormal Bases

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Looking at sets and bases that are orthonormal -- or where all the vectors have length 1 and are orthogonal to each other. More free lessons at: http://www.khanacademy.org/video?v=7BFx8pt2aTQ

• 19:24

### Linear Algebra: The Gram-Schmidt Process

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Finding an orthonormal basis for a subspace using the Gram-Schmidt Process More free lessons at: http://www.khanacademy.org/video?v=rHonltF77zI

• 13:14

### Linear Algebra: Gram-Schmidt Process Example

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Using Gram-Schmidt to find an orthonormal basis for a plane in R3 More free lessons at: http://www.khanacademy.org/video?v=tu1GPtfsQ7M

• 07:43

### Linear Algebra: Introduction to Eigenvalues and Eigenvectors

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What eigenvectors and eigenvalues are and why they are interesting More free lessons at: http://www.khanacademy.org/video?v=PhfbEr2btGQ

• 05:39

### Linear Algebra: Example solving for the eigenvalues of a 2x2 matrix

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Example solving for the eigenvalues of a 2x2 matrix More free lessons at: http://www.khanacademy.org/video?v=pZ6mMVEE89g

• 14:34

### Linear Algebra: Finding Eigenvectors and Eigenspaces example

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Finding the eigenvectors and eigenspaces of a 2x2 matrix More free lessons at: http://www.khanacademy.org/video?v=3-xfmbdzkqc

• 15:34

### Linear Algebra: Eigenvectors and Eigenspaces for a 3x3 matrix

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Eigenvectors and eigenspaces for a 3x3 matrix More free lessons at: http://www.khanacademy.org/video?v=3Md5KCCQX-0

>> View fundamental theorem algebra web videos