Search Results: "Fundamental theorem of algebra"
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03:52
The Fundamental Theorem of Arithmetic
324 views / 0 likes  addedThe 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
422 views / 0 likes  addedWhere did the word "Algebra" and its underlying ideas come from? Watch the next lesson: https://www.khanacademy.org/math/algebra/introductiontoalgebra/overview_hist_alg/v/abstractness?utm_source=YT&utm_medium=Desc&utm_campaign=AlgebraI Algebra I on Kha

12:07
Algebra Basics: What Is Algebra?  Math Antics
483 views / 0 likes  addedThe first video in the Algebra Basics Series: https://www.youtube.com/watch?v=NybHckSEQBI&list=PLUPEBWbAHUszT_GebJK23JHdd_Bss1NG 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
Abstractness  Introduction To Algebra  Algebra I  Khan Academy
332 views / 0 likes  addedThe general idea behind the word 'abstract' Watch the next lesson: https://www.khanacademy.org/math/algebra/introductiontoalgebra/overview_hist_alg/v/thebeautyofalgebra?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
334 views / 0 likes  addedLearn what variables, expressions, and equations really are. Practice this lesson yourself on KhanAcademy.org right now: https://www.khanacademy.org/math/algebra/introductiontoalgebra/feelforequationsandinequalit/e/dependentandindependentvariable

08:41
Math in the Simpsons: Homer's theorem
136 views / 0 likes  addedAfter 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
173 views / 0 likes  addedWhy 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
348 views / 0 likes  addedCheck out our Patreon page: https://www.patreon.com/teded View full lesson: https://ed.ted.com/lessons/howmanywaysaretheretoprovethepythagoreantheorembettyfei What do Euclid, 12yearold Einstein, and American President James Garfield have in c

01:37
Using the Pythagorean Theorem
370 views / 0 likes  addedu07_l1_t4_we1 Using the Pythagorean Theorem

03:48
Pythagorean theorem with right triangle
337 views / 0 likes  addedPythagorean theorem with right triangle

02:55
Pythagorean Theorem Application
352 views / 0 likes  addedu07_l1_t4_we2 Pythagorean Theorem Application

08:22
Is There a Fifth Fundamental Force? + Quantum Eraser Answer  Space Time  PBS Digital Studios
375 views / 0 likes  addedHas 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

13:03
Pythagorean Theorem
414 views / 0 likes  addedPythagorean Theorem More free lessons at: http://www.khanacademy.org/video?v=AEIzy1kNRqo

03:41
Example finding distance with Pythagorean theorem
383 views / 0 likes  addedExample finding distance with Pythagorean theorem

08:50
Visual Pythagorean Theorem Proof
440 views / 0 likes  addedVisual Pythagorean Theorem Proof  some basic geometry required

09:49
Central Limit Theorem
476 views / 0 likes  addedIntroduction 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
562 views / 1 likes  addedU07_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
421 views / 0 likes  addedU07_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
364 views / 0 likes  addedU07_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
223 views / 0 likes  addedHam 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
334 views / 0 likes  addedUsing 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
376 views / 0 likes  addedFeaturing 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
407 views / 0 likes  addedPart of the Algebra Basics Series: https://www.youtube.com/watch?v=NybHckSEQBI&list=PLUPEBWbAHUszT_GebJK23JHdd_Bss1NG 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
85 views / 0 likes  addedWhy 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
292 views / 0 likes  addedSupport 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
143 views / 0 likes  addedWatch 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
391 views / 0 likes  addedLynda 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
381 views / 0 likes  addedModularity... 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
281 views / 0 likes  addedLynda 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
305 views / 0 likes  addedThis video supported by Squarespace: https://www.squarespace.com/numberphile The Four Color Map Theorem (or colour!?) was a longstanding 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
302 views / 1 likes  addedBe 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/sciencebulletins/(watch)/as

13:53
Gödel's Incompleteness Theorem  Numberphile
263 views / 0 likes  addedMarcus 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

10:30
Four Fundamental Forces
251 views / 0 likes  addedGravity, Weak, Electromagnetic and Strong More free lessons at: http://www.khanacademy.org/video?v=FEF6PxWOvsk

06:17
Solving Percent Problems  Decimals  PreAlgebra  Khan Academy
433 views / 0 likes  addedWe'll use algebra to solve this percent problem. Watch the next lesson: https://www.khanacademy.org/math/prealgebra/decimalsprealg/percentwordprobsprealg/v/solvingpercentproblems2?utm_source=YT&utm_medium=Desc&utm_campaign=PreAlgebra Missed the

12:49
Scientific Notation Examples  PreAlgebra  Khan Academy
358 views / 0 likes  addedMore scientific notation examples Practice this lesson yourself on KhanAcademy.org right now: https://www.khanacademy.org/math/prealgebra/exponentsradicals/scientificnotation/e/scientific_notation?utm_source=YT&utm_medium=Desc&utm_campaign=PreAlgebra W

03:03
Introduction To Exponents  PreAlgebra  Khan Academy
402 views / 0 likes  addedTaking 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
316 views / 0 likes  addedSal 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/algebrafunctions/functions

03:21
Introduction To Perimeter  Measurement  PreAlgebra  Khan Academy
311 views / 0 likes  addedFind perimeter by adding sidelengths of various figures. Practice this lesson yourself on KhanAcademy.org right now: https://www.khanacademy.org/math/prealgebra/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
291 views / 0 likes  addedSal 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/algebrafunctions/functioninputsandoutputs/e/functions_matching_inputs_outputs?utm_

05:27
Converting Directly From Binary To Hexadecimal  PreAlgebra  Khan Academy
339 views / 0 likes  addedWatch the next lesson: https://www.khanacademy.org/math/prealgebra/exponentsradicals/Worldofexponents/v/exponentswarmup?utm_source=YT&utm_medium=Desc&utm_campaign=PreAlgebra Missed the previous lesson? https://www.khanacademy.org/math/prealgebra/app

10:29
Algebra Basics: Solving 2Step Equations  Math Antics
663 views / 1 likes  addedThere was a confusing example in the original video. This is the updated version. This video shows students how to solve 2step Algebra equations involving one addition or subtraction and one multiplication or division. Part of the Algebra Basics Series:

03:33
Finding A Percentage  Decimals  PreAlgebra  Khan Academy
437 views / 0 likes  addedOnce 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/prealgebra/decimal

01:07
How To Match Function Input To Output Given The Graph (example)  Algebra I  Khan Academy
337 views / 0 likes  addedSal 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/algebrafunctions/functioninputsandoutputs/e/functions_matching_inputs_outputs?utm_so

04:20
Dividing A Whole Number By A Decimal  Decimals  PreAlgebra  Khan Academy
461 views / 1 likes  addedWhen 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/prealgebra/decimalsprealg/divi

20:48
Introduction To Scientific Notation  PreAlgebra  Khan Academy
483 views / 0 likes  addedIntroduction to scientific notation. An indepth discussion about why and how scientific notation is used. Practice this lesson yourself on KhanAcademy.org right now: https://www.khanacademy.org/math/prealgebra/exponentsradicals/scientificnotation/e/sc

05:37
Linear Models Example 2  Algebra I  Khan Academy
306 views / 0 likes  addedMarbles and water in tank Practice this lesson yourself on KhanAcademy.org right now: https://www.khanacademy.org/math/algebra/twovarlinearequationsandintrotofunctions/linearfunctionsmodeling/e/constructingandinterpretinglinearfunctions?utm_s

09:17
Unit Conversion Within The Metric System  PreAlgebra  Khan Academy
385 views / 0 likes  addedMetric unit conversion Watch the next lesson: https://www.khanacademy.org/math/prealgebra/ratesandratios/metricsystemtutorial/v/convertingwithinthemetricsystem?utm_source=YT&utm_medium=Desc&utm_campaign=PreAlgebra Missed the previous lesson? http

03:36
Approximating Irrational Number Exercise Example  PreAlgebra  Khan Academy
360 views / 0 likes  addedPractice this lesson yourself on KhanAcademy.org right now: https://www.khanacademy.org/math/prealgebra/orderofoperations/rationalirrationalnumbers/e/approximatingirrationalnumbers?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
327 views / 0 likes  addedSal 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/algebrafunctions/interpretingfunctionnotation/e/functionnota

18:59
The Four Color Theorem  Coloring a Planar Graph
128 views / 0 likes  addedTrain 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

10:00
Introduction To Number Systems And Binary  PreAlgebra  Khan Academy
312 views / 0 likes  addedWatch the next lesson: https://www.khanacademy.org/math/prealgebra/applyingmathreasoningtopic/alternatenumberbases/v/hexadecimalnumbersystem?utm_source=YT&utm_medium=Desc&utm_campaign=PreAlgebra Missed the previous lesson? https://www.khanacademy.

04:07
Adding And Subtracting Negative Numbers  PreAlgebra  Khan Academy
402 views / 0 likes  addedLearn 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  PreAlgebra  Khan Academy
386 views / 0 likes  addedWork 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/prealgebra/orderofoperations/order_of_operations/e/order_of_operations

09:16
Adding/subtracting Negative Numbers  PreAlgebra  Khan Academy
463 views / 0 likes  addedAdding and subtracting negative numbers Watch the next lesson: https://www.khanacademy.org/math/prealgebra/negativesabsolutevalueprealg/multdivnegativesprealg/v/multiplyingpositiveandnegativenumbers?utm_source=YT&utm_medium=Desc&utm_campaign=

08:13
Prime Numbers  Factors And Multiples  PreAlgebra  Khan Academy
394 views / 0 likes  addedWhat 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
435 views / 0 likes  addedSal 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/algebrafunctions/interpretingfunctionnotation

03:00
Inverse Property Of Addition  Arithmetic Properties  PreAlgebra  Khan Academy
476 views / 0 likes  addedThe simple idea that a number plus its negative is 0 Watch the next lesson: https://www.khanacademy.org/math/prealgebra/orderofoperations/arithmetic_properties/v/inversepropertyofmultiplication?utm_source=YT&utm_medium=Desc&utm_campaign=PreAlgebra M

06:56
Exponents And Powers Of Zero Patterns  PreAlgebra  Khan Academy
449 views / 0 likes  addedNow 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/prealgebra

03:43
Converting From Decimal To Hexadecimal Representation  PreAlgebra  Khan Academy
332 views / 0 likes  addedWatch the next lesson: https://www.khanacademy.org/math/prealgebra/applyingmathreasoningtopic/alternatenumberbases/v/binaryaddition?utm_source=YT&utm_medium=Desc&utm_campaign=PreAlgebra Missed the previous lesson? https://www.khanacademy.org/math/p

02:07
Percentage Of A Whole Number  Decimals  PreAlgebra  Khan Academy
292 views / 0 likes  addedWe 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  PreAlgebra  Khan Academy
483 views / 0 likes  addedWatch the next lesson: https://www.khanacademy.org/math/prealgebra/applyingmathreasoningtopic/alternatenumberbases/v/binarymultiplication?utm_source=YT&utm_medium=Desc&utm_campaign=PreAlgebra Missed the previous lesson? https://www.khanacademy.org/

07:51
Volume: How To Measure It  Measurement  PreAlgebra  Khan Academy
413 views / 0 likes  addedVolume 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  PreAlgebra  Khan Academy
432 views / 0 likes  addedIn 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/prealgebra/ratesandratios/ratios_and_proportions/e/solvingratioproblemswi

02:04
Ratio Word Problem: Boys To Girls  PreAlgebra  Khan Academy
348 views / 0 likes  addedIn 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/prealgebra/ratesandratios/ratios_and_proportions/e/rat

09:35 Popular
Algebra Basics: Solving Basic Equations Part 2  Math Antics
971 views / 0 likes  addedPart of the Algebra Basics Series: https://www.youtube.com/watch?v=NybHckSEQBI&list=PLUPEBWbAHUszT_GebJK23JHdd_Bss1NG Previous video: https://youtu.be/l3XzepN03KQ Next video: Coming Soon This video shows students how to solve simple 1step Algebra equati

02:49
Percent Word Problem Example 2  Decimals  PreAlgebra  Khan Academy
352 views / 0 likes  addedIt'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  PreAlgebra  Khan Academy
509 views / 0 likes  addedPractice this lesson yourself on KhanAcademy.org right now: https://www.khanacademy.org/math/prealgebra/exponentsradicals/radicalradicals/e/simplifying_radicals?utm_source=YT&utm_medium=Desc&utm_campaign=PreAlgebra Watch the next lesson: https://www.kh

05:05
Solving Ratio Problems With Tables Example 1  PreAlgebra  Khan Academy
313 views / 0 likes  addedWe'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/prealgebra/r

06:14
How To Plot Inequalities On A Number Line  PreAlgebra  Khan Academy
420 views / 0 likes  addedLearn 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/prealgebra/applyingmathreasoningtopic/greaterthanlessthan/e/writin

08:34
LCM And GCF Word Problems  Factors And Multiples  PreAlgebra  Khan Academy
417 views / 1 likes  addedHere we have a couple of word problemsone 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  PreAlgebra  Khan Academy
330 views / 0 likes  addedCover figures with square units to find their area. Practice this lesson yourself on KhanAcademy.org right now: https://www.khanacademy.org/math/prealgebra/measurement/areabasics/e/measuringareawithunitsquares?utm_source=YT&utm_medium=Desc&utm_campa

04:31
Number Patterns: Interpreting Relationships  PreAlgebra  Khan Academy
351 views / 0 likes  addedExamining 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/prealgebra/applyingmathreasoningtopic/numberpatterns/e/vis

08:52
Linear Models Example 1  Algebra I  Khan Academy
415 views / 0 likes  addedLinear model for book reading Practice this lesson yourself on KhanAcademy.org right now: https://www.khanacademy.org/math/algebra/twovarlinearequationsandintrotofunctions/linearfunctionsmodeling/e/constructingandinterpretinglinearfunctions?u

07:34
Hexadecimal Number System  Applying Mathematical Reasoning  PreAlgebra  Khan Academy
453 views / 0 likes  addedWatch the next lesson: https://www.khanacademy.org/math/prealgebra/applyingmathreasoningtopic/alternatenumberbases/v/decimaltobinary?utm_source=YT&utm_medium=Desc&utm_campaign=PreAlgebra Missed the previous lesson? https://www.khanacademy.org/math

04:16
Least Common Multiple Exercise  Factors And Multiples  PreAlgebra  Khan Academy
452 views / 0 likes  addedWe'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  PreAlgebra  Khan Academy
432 views / 0 likes  addedWatch the next lesson: https://www.khanacademy.org/math/prealgebra/applyingmathreasoningtopic/alternatenumberbases/v/largenumberdecimaltobinary?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  PreAlgebra  Khan Academy
360 views / 0 likes  addedLet'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/prealgebra/applyingmathreasoningtopic/

02:40
Interpreting Linear Formulas Example 1  Algebra I  Khan Academy
449 views / 0 likes  addedInterpreting a linear formula Practice this lesson yourself on KhanAcademy.org right now: https://www.khanacademy.org/math/algebra/twovarlinearequationsandintrotofunctions/interpreting_linear_functions/e/interpretingfeaturesoflinearfunctions?ut

08:23
Constructing Linear Functions Example 2  Algebra I  Khan Academy
296 views / 0 likes  addedLinear model for painting Practice this lesson yourself on KhanAcademy.org right now: https://www.khanacademy.org/math/algebra/twovarlinearequationsandintrotofunctions/linearfunctionsmodeling/e/constructinglinearfunctionswordproblems?utm_sour

09:43
Exponent Rules Part 1  Exponents, Radicals, And Scientific Notation  PreAlgebra  Khan Academy
443 views / 0 likes  addedIntroduction to exponent rules Practice this lesson yourself on KhanAcademy.org right now: https://www.khanacademy.org/math/prealgebra/exponentsradicals/exponentproperties/e/exponent_rules?utm_source=YT&utm_medium=Desc&utm_campaign=PreAlgebra Watch the

02:35
Interpreting Linear Formulas Example 2  Algebra I  Khan Academy
324 views / 0 likes  addedLinear equation for file transfer Practice this lesson yourself on KhanAcademy.org right now: https://www.khanacademy.org/math/algebra/twovarlinearequationsandintrotofunctions/interpreting_linear_functions/e/interpretingfeaturesoflinearfunction

05:02
Positive And Negative Slope  Algebra I  Khan Academy
372 views / 0 likes  addedPositive and negative slope Watch the next lesson: https://www.khanacademy.org/math/algebra/twovarlinearequationsandintrotofunctions/slope/v/similartrianglestoprovethattheslopeisconstantforaline?utm_source=YT&utm_medium=Desc&utm_campaign

06:35
Constructing Linear Functions Example 1  Algebra I  Khan Academy
435 views / 0 likes  addedLinear model for ice sheet thickness Practice this lesson yourself on KhanAcademy.org right now: https://www.khanacademy.org/math/algebra/twovarlinearequationsandintrotofunctions/linearfunctionsmodeling/e/constructinglinearfunctionswordproble

03:12
Graphing Linear Functions Example 2  Algebra I  Khan Academy
358 views / 0 likes  addedGraphing equation for filling pool Practice this lesson yourself on KhanAcademy.org right now: https://www.khanacademy.org/math/algebra/twovarlinearequationsandintrotofunctions/linearfunctionsmodeling/e/graphinglinearfunctionswordproblems?utm

03:28
Inequality Word Problems  Applying Mathematical Reasoning  PreAlgebra  Khan Academy
487 views / 0 likes  addedWe'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/prealgebra/applyingmathreasoningtopic/greaterthanlessthan/e/writingnumeric

06:20
Greatest Common Factor Explained  Factors And Multiples  PreAlgebra  Khan Academy
323 views / 0 likes  addedHere'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/prealgebra/factorsmultiples/

05:26
Factors And Divisibility In Algebra
292 views / 0 likes  addedFactors and divisibility in algebra

11:08 Popular
Algebra Basics: Solving Basic Equations Part 1  Math Antics
1,058 views / 3 likes  addedPart of the Algebra Basics Series: https://www.youtube.com/watch?v=NybHckSEQBI&list=PLUPEBWbAHUszT_GebJK23JHdd_Bss1NG Previous video: https://youtu.be/NybHckSEQBI Next video: https://youtu.be/Qyd_v3DGzTM This video shows students how to solve simple 1st
Featured 
05:41
Math Patterns Example 2  Applying Mathematical Reasoning  PreAlgebra  Khan Academy
418 views / 0 likes  addedWe 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/mathpatterns?utm_source=YT&utm_medium=Desc&utm

03:38
Math Patterns Example 1  Applying Mathematical Reasoning  PreAlgebra  Khan Academy
406 views / 0 likes  addedPart 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/mathpatterns?utm_source=YT&utm_mediu

35:56
Thermodynamics and the End of the Universe: Energy, Entropy, and the fundamental laws of physics.
170 views / 0 likes  addedEasy 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  PreAlgebra  Khan Academy
402 views / 0 likes  addedLaying 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/prealgebra/applyin

05:30
Graphing Linear Functions Example 1  Algebra I  Khan Academy
337 views / 0 likes  addedLearn 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/twovarlinearequationsandintro

03:40
Multistep Word Problem With Decimals And Subtraction  PreAlgebra  Khan Academy
428 views / 0 likes  addedFirst 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/prealgebra/applyingmathreasoningtopi

08:21
Twovariable Linear Equations And Their Graphs  Algebra I  Khan Academy
311 views / 0 likes  addedIntroduction to 2variable linear equations and their graphs Watch the next lesson: https://www.khanacademy.org/math/algebra/twovarlinearequationsandintrotofunctions/solutionstotwovarlinearequations/v/checkingorderedpairsolutionstoequatio

05:34
Multiplying Positive And Negative Numbers  PreAlgebra  Khan Academy
383 views / 0 likes  addedLearn 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/absolutevalue/mult_div_negatives/e/multiplying_and_dividing_negative_numbers?

02:27
Inequality Word Problem: One Variable  Applying Mathematical Reasoning  PreAlgebra  Khan Academy
356 views / 0 likes  addedThis 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/prealgebra/applyingmathreasoningto

02:27
Checking Ordered Pair Solutions To Equations Example 2  Algebra I  Khan Academy
336 views / 0 likes  addedSecond example of ordered pair solutions Practice this lesson yourself on KhanAcademy.org right now: https://www.khanacademy.org/math/algebra/twovarlinearequationsandintrotofunctions/solutionstotwovarlinearequations/e/plugging_in_values?utm_so

07:11
Graphing Solutions To Twovariable Linear Equations Example 2  Algebra I  Khan Academy
435 views / 0 likes  addedGraphing solutions to 2 variable linear equations Practice this lesson yourself on KhanAcademy.org right now: https://www.khanacademy.org/math/algebra/twovarlinearequationsandintrotofunctions/solutionstotwovarlinearequations/e/graphingsolutio

02:35
Checking Ordered Pair Solutions To Equations Example 1  Algebra I  Khan Academy
429 views / 0 likes  addedChecking ordered pair solutions to equations Practice this lesson yourself on KhanAcademy.org right now: https://www.khanacademy.org/math/algebra/twovarlinearequationsandintrotofunctions/solutionstotwovarlinearequations/e/plugging_in_values?ut

05:09
Converting From Slopeintercept To Standard Form  Algebra I  Khan Academy
460 views / 0 likes  addedConverting from slopeintercept to standard form Practice this lesson yourself on KhanAcademy.org right now: https://www.khanacademy.org/math/algebra/twovarlinearequationsandintrotofunctions/standardform/e/converting_between_slope_intercept_and_st

19:53
Linear Algebra  Matrix Transformations
187 views / 0 likes  addedMatrix multiplication and linear algebra explained with 3D animations.

08:30
Multiplying And Dividing Negative Numbers  PreAlgebra  Khan Academy
428 views / 0 likes  addedMultiplying and dividing negative numbers Watch the next lesson: https://www.khanacademy.org/math/arithmetic/absolutevalue/abs_value_tutorial/v/absolutevalueandnumberlines?utm_source=YT&utm_medium=Desc&utm_campaign=PreAlgebra Missed the previous less

03:21
Rational Number Word Problem With Fractions  PreAlgebra  Khan Academy
425 views / 0 likes  addedWord problems force us to put concepts to work using realworld 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
455 views / 0 likes  addedFun word problem that is almost a brain teaser. Watch the next lesson: https://www.khanacademy.org/math/algebra/solvinglinearequationsandinequalities/Moreequationpractice/v/patternsinsequences1?utm_source=YT&utm_medium=Desc&utm_campaign=AlgebraI

09:50
Adding And Subtracting Fractions  Fractions  PreAlgebra  Khan Academy
583 views / 1 likes  addedHow to add and subtract fractions. Practice this lesson yourself on KhanAcademy.org right now: https://www.khanacademy.org/math/prealgebra/fractionsprealg/fractionsunlikedenomprealg/e/adding_fractions?utm_source=YT&utm_medium=Desc&utm_campaign=PreA

03:53
Plotting Basic Fractions On The Number Line  Fractions  PreAlgebra  Khan Academy
503 views / 0 likes  addedPractice this lesson yourself on KhanAcademy.org right now: https://www.khanacademy.org/math/prealgebra/fractionsprealg/understandingfractionsprealg/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  PreAlgebra  Khan Academy
447 views / 0 likes  addedSee examples of multiplying and dividing fractions with negative numbers. Practice this lesson yourself on KhanAcademy.org right now: https://www.khanacademy.org/math/prealgebra/fractionsprealg/multiplyingfractionsprealg/e/multiplying_fractions?utm_

02:39
Comparing Decimals: Ordering From Least To Greatest  Decimals  PreAlgebra  Khan Academy
435 views / 0 likes  addedThis 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  PreAlgebra  Khan Academy
474 views / 0 likes  addedWe 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  PreAlgebra  Khan Academy
461 views / 0 likes  addedMultiplying 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  PreAlgebra  Khan Academy
445 views / 0 likes  addedIntroduces the concept of equivalent fractions Practice this lesson yourself on KhanAcademy.org right now: https://www.khanacademy.org/math/prealgebra/fractionsprealg/equivalentfractionsprealg/e/equivalent_fractions?utm_source=YT&utm_medium=Desc&utm

05:42
Understanding Division Of Fractions  Fractions  PreAlgebra  Khan Academy
443 views / 0 likes  addedUsing 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/prealgebra/fractionsprealg/divfractionsfractionsprealg/e/

09:23
Converting Fractions To Decimals  Decimals  PreAlgebra  Khan Academy
494 views / 1 likes  addedHow to express a fraction as a decimal Practice this lesson yourself on KhanAcademy.org right now: https://www.khanacademy.org/math/prealgebra/decimalsprealg/decimaltofractionprealg/e/converting_fractions_to_decimals?utm_source=YT&utm_medium=Desc&u

10:07
The Beauty of Algebra
296 views / 0 likes  addedWhy the abstraction of mathematics is so fundamental More free lessons at: http://www.khanacademy.org/video?v=kpCJyQ2usJ4

03:08
Multiplying Unit Fractions And Whole Numbers  Fractions  PreAlgebra  Khan Academy
481 views / 1 likes  addedDon'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/prealgebra/fractionsprealg/multiplyin

09:15
Mixed Numbers And Improper Fractions  Fractions  PreAlgebra  Khan Academy
515 views / 1 likes  addedConverting 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/prealgebra/fractionsprealg/mixednumbersprealg/e/converting_mixed_numb

01:11
Subtracting Decimals: Example 1  Decimals  PreAlgebra  Khan Academy
402 views / 0 likes  addedSubtracting 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/prealgebra/decimalsprealg/addingdecimalsprealg/e/subtracting

09:29
Dividing Decimals With Hundredths Example 3  Decimals  PreAlgebra  Khan Academy
438 views / 0 likes  addedThe 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/prealgebra/decimalsprealg/dividingd

14:13
Introduction To Ratios  Ratios, Proportions, Units, And Rates  PreAlgebra  Khan Academy
519 views / 0 likes  addedWhat a ratio is. Simple ratio problems. Practice this lesson yourself on KhanAcademy.org right now: https://www.khanacademy.org/math/prealgebra/ratesandratios/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  PreAlgebra  Khan Academy
561 views / 0 likes  addedSolve 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/prealgebra/fractionsprealg/dividingfractionsprealg

04:51
Cube Root Of A Nonperfect Cube  PreAlgebra  Khan Academy
451 views / 0 likes  addedPractice this lesson yourself on KhanAcademy.org right now: https://www.khanacademy.org/math/prealgebra/exponentsradicals/cuberoottutorial/e/cube_roots?utm_source=YT&utm_medium=Desc&utm_campaign=PreAlgebra Watch the next lesson: https://www.khanacadem

04:24
Example Of Subtracting Fractions With Unlike Denominators  Fractions  PreAlgebra  Khan Academy
488 views / 0 likes  addedIf 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
Simplifying Radicals  Exponents, Radicals, And Scientific Notation  PreAlgebra  Khan Academy
459 views / 1 likes  addedUsing exponent rules to simplify radicals or square roots Practice this lesson yourself on KhanAcademy.org right now: https://www.khanacademy.org/math/prealgebra/exponentsradicals/radicalradicals/e/simplifying_radicals?utm_source=YT&utm_medium=Desc&utm

10:10
IIT JEE Hairy Trig and Algebra (part 1)
471 views / 0 likes  added2010 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)
432 views / 0 likes  added2010 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)
421 views / 0 likes  added2010 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  PreAlgebra  Khan Academy
477 views / 0 likes  addedSolve 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/prealgebra/fractionsprealg/dividingfractionsprealg

04:25
Multiplying Challenging Decimals  Decimals  PreAlgebra  Khan Academy
344 views / 0 likes  addedSometimes 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  PreAlgebra  Khan Academy
450 views / 0 likes  addedHow 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/prealgebra/exponentsradicals/negativeexponents

02:36
Converting Decimals To Percents  Decimals  PreAlgebra  Khan Academy
363 views / 0 likes  addedNeed 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/prealgebra/decimalsprealg/percentintrop

24:47
Linear Algebra: Parametric Representations of Lines
320 views / 0 likes  addedLinear 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  PreAlgebra  Khan Academy
458 views / 0 likes  addedTo 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/preal

02:34
Converting From Standard Form To Slopeintercept Form  Algebra I  Khan Academy
502 views / 0 likes  addedStandard form to slopeintercept form Practice this lesson yourself on KhanAcademy.org right now: https://www.khanacademy.org/math/algebra/twovarlinearequationsandintrotofunctions/standardform/e/slopefromanequationinstandardform?utm_source=Y

47:36
Completing the square  Live algebra lesson
290 views / 0 likes  addedDo 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  PreAlgebra  Khan Academy
409 views / 0 likes  addedMysterious 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
490 views / 0 likes  addedThis video introduces students to polynomials and terms. Part of the Algebra Basics Series: https://www.youtube.com/watch?v=NybHckSEQBI&list=PLUPEBWbAHUszT_GebJK23JHdd_Bss1NG Learn More at mathantics.com Visit http://www.mathantics.com for more Free math

04:00
Finding Factors And Multiples  Factors And Multiples  PreAlgebra  Khan Academy
489 views / 0 likes  addedTo 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
321 views / 0 likes  addedToday's Crash Course Chemistry takes a historical perspective on the creation of the science, which didn't really exist until a supersmart, superwealthy Frenchman put the puzzle pieces together  Hank tells the story of how we went from alchemists to ch

01:20
The Hairy Ball Theorem
237 views / 0 likes  addedEver 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

10:43 Popular
Algebra Basics: Simplifying Polynomials  Math Antics
879 views / 1 likes  addedIn 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_Bss1NG Learn More at
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11:54 Popular
Algebra Basics: The Distributive Property  Math Antics
866 views / 0 likes  addedThis 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

58:25
Birth Of A Theorem  With Cédric Villani
289 views / 0 likes  addedWhere 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
893 views / 0 likes  addedLearn more at mathantics.com Visit http://www.mathantics.com for more Free math videos and additional subscription based content!
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15:46
Linear Algebra: Introduction to Linear Independence
300 views / 0 likes  addedLinear Algebra: Introduction to linear dependence and independence More free lessons at: http://www.khanacademy.org/video?v=CrV1xCWdYg

07:25
Algebra Word Problem  Factoring
424 views / 0 likes  addedLearn 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
423 views / 0 likes  addedSolve 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?
417 views / 0 likes  addedTwo 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
810 views / 1 likes  addedA 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
463 views / 0 likes  addedThe 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
297 views / 0 likes  addedequations of the form AX=B More free lessons at: http://www.khanacademy.org/video?v=bAerID24QJ0

06:07
Algebra: Linear Equations 2
273 views / 0 likes  addedsolving equations of the form AX+B=C More free lessons at: http://www.khanacademy.org/video?v=DopnmxeMts

06:45
Algebra: Linear Equations 3
240 views / 0 likes  addedLinear equations with multiple variable and constant terms More free lessons at: http://www.khanacademy.org/video?v=ZnGbH2S0Dk

10:01
Linear Algebra: 3x3 Determinant
420 views / 0 likes  addedDeterminants: Finding the determinant of a 3x3 matrix More free lessons at: http://www.khanacademy.org/video?v=0c7dt2SQfLw

18:40
Linear Algebra: nxn Determinant
394 views / 0 likes  addedDefining 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
441 views / 0 likes  addedUsing 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
760 views / 0 likes  addedThis 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/p6aMk4up If you like my videos, you can support me at Patreon: http://www.patreon.com/mindyourdecis

25:34
Linear Algebra: Vector Examples
319 views / 0 likes  addedVisually understanding basic vector operations More free lessons at: http://www.khanacademy.org/video?v=r4bH66vYjss

19:00
Linear Algebra: Basis of a Subspace
342 views / 0 likes  addedUnderstanding the definition of a basis of a subspace More free lessons at: http://www.khanacademy.org/video?v=zntNi3ybfQ

16:34
Linear Algebra: Exploring the solution set of Ax=b
408 views / 0 likes  addedExploring 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
408 views / 0 likes  addedFiguring 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
415 views / 0 likes  addedThe 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
431 views / 0 likes  addedDeterminant 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
392 views / 0 likes  addedWhat 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
456 views / 0 likes  addedCalculating 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
394 views / 0 likes  addedTranspose of a matrix More free lessons at: http://www.khanacademy.org/video?v=2t0003_sxtU

14:10
Linear Algebra: Determinant of Transpose
429 views / 0 likes  addedProof by induction that transposing a matrix does not change its determinant More free lessons at: http://www.khanacademy.org/video?v=xGV2v0dRNE

12:07
Linear Algebra: Transpose of a Vector
376 views / 0 likes  addedTranspose of a column vector. Matrixmatrix products using vectors More free lessons at: http://www.khanacademy.org/video?v=lSoaMCNKfAg

22:08
Linear Algebra: Orthogonal Complements
431 views / 0 likes  addedOrthogonal 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
382 views / 0 likes  addedShowing 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
432 views / 0 likes  addedProjections onto subspaces More free lessons at: http://www.khanacademy.org/video?v=5B8XluiqdHM

15:32
Linear Algebra: Least Squares Approximation
393 views / 0 likes  addedThe 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
418 views / 0 likes  addedAn 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
420 views / 0 likes  addedDetermining the eigenvalues of a 3x3 matrix More free lessons at: http://www.khanacademy.org/video?v=11dNghWC4HI

18:53
Linear Algebra: Vector Triangle Inequality
341 views / 0 likes  addedProving 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
324 views / 0 likes  addedIntroduction to the cross product More free lessons at: http://www.khanacademy.org/video?v=pJzmiywagfY

18:14
Linear Algebra: Matrix Product Examples
403 views / 0 likes  addedExample 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
390 views / 0 likes  addedIntroduction to the inverse of a function More free lessons at: http://www.khanacademy.org/video?v=eAzhBZgq28

20:00
Linear Algebra: Matrix condition for onetoone trans
423 views / 0 likes  addedShowing that the rank of the of an mxn transformation matrix has to be an for the transformation to be onetoone (injective) More free lessons at: http://www.khanacademy.org/video?v=M3FuL9qKTBs

06:37
Linear Algebra: Simplifying conditions for invertibility
376 views / 0 likes  addedShowing 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
396 views / 0 likes  addedExample 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
398 views / 0 likes  addedFinding 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
434 views / 0 likes  addedA 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
408 views / 0 likes  addedThe determinant when a row is multiplied by a scalar More free lessons at: http://www.khanacademy.org/video?v=32rdijPBrA

02:52
Linear Algebra: (correction) scalar muliplication of row
505 views / 0 likes  addedCorrection 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
426 views / 0 likes  addedThe 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
494 views / 0 likes  addedRealizing 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=nS63_goDFg

20:10
Linear Algebra: Determinant as Scaling Factor
466 views / 0 likes  addedViewing 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
404 views / 0 likes  addedTaking 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
423 views / 0 likes  addedTransposes of sums and inverses More free lessons at: http://www.khanacademy.org/video?v=Br_8t58mdeI

23:19
Linear Algebra: Rowspace and Left Nullspace
394 views / 0 likes  addedRowspace and Left Nullspace More free lessons at: http://www.khanacademy.org/video?v=qBfc57x_RSg

13:04
Linear Algebra: Subspace Projection Matrix Example
500 views / 0 likes  addedExample 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
421 views / 0 likes  addedUnderstanding alternate coordinate systems More free lessons at: http://www.khanacademy.org/video?v=uvgru6FcyxU

17:55
Linear Algebra: Change of Basis Matrix
454 views / 0 likes  addedUsing 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
415 views / 0 likes  addedLooking 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 GramSchmidt Process
400 views / 0 likes  addedFinding an orthonormal basis for a subspace using the GramSchmidt Process More free lessons at: http://www.khanacademy.org/video?v=rHonltF77zI

13:14
Linear Algebra: GramSchmidt Process Example
404 views / 0 likes  addedUsing GramSchmidt 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
413 views / 0 likes  addedWhat 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
438 views / 0 likes  addedExample 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
445 views / 0 likes  addedFinding the eigenvectors and eigenspaces of a 2x2 matrix More free lessons at: http://www.khanacademy.org/video?v=3xfmbdzkqc

15:34
Linear Algebra: Eigenvectors and Eigenspaces for a 3x3 matrix
409 views / 0 likes  addedEigenvectors and eigenspaces for a 3x3 matrix More free lessons at: http://www.khanacademy.org/video?v=3Md5KCCQX0

11:34
Algebra Basics: What Are Functions?  Math Antics
639 views / 0 likes  addedLearn More at mathantics.com Visit http://www.mathantics.com for more Free math videos and additional subscription based content!
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