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This 8-minute video lecture demonstrates how to use a position vector valued function to describe a curve or path. [Calculus playlist: Lesson 133 of 156]

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Mathematics
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Salman Khan
02/20/2011
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In this tutorial, we will learn to approximate differentiable functions with polynomials. Beyond just being super cool, this can be useful for approximating functions so that they are easier to calculate, differentiate or integrate. So whether you will have to write simulations or become a bond trader (bond traders use polynomial approximation to estimate changes in bond prices given interest rate changes and vice versa), this tutorial could be fun. If that isn't motivation enough, we also come up with one of the most epic and powerful conclusions in all of mathematics in this tutorial: Euler's identity.

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Salman Khan
07/12/2018
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This series of videos focusing on calculus covers using definite integrals with the shell and disc methods to find volumes of solids of revolution.

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07/12/2018
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This 8-minute video lesson presents an intuition (but not a proof) of the Squeeze Theorem. [Calculus playlist: Lesson 7 of 156]

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Mathematics
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Salman Khan
02/20/2011
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This series of videos focusing on calculus covers parameterizing a surface, surface integrals, stokes' theorem.

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07/12/2018
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You can parameterize a line with a position vector valued function and understand what a differential means in that context already. This tutorial will take things further by parametrizing surfaces (2 parameters baby!) and have us thinking about partial differentials.

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Mathematics
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Salman Khan
07/12/2018
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You know what Stokes' theorem is and how to apply it, but are craving for some real proof that it is true. Well, you've found the right tutorial!

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Salman Khan
07/12/2018
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Finding line integrals to be a bit boring? Well, this tutorial will add new dimension to your life by explore what surface integrals are and how we can calculate them.

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Mathematics
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Salman Khan
07/12/2018
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This series of videos focusing on calculus covers calculating derivatives, power rule, product and quotient rules, chain rule, implicit differentiation, derivatives of common functions.

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07/12/2018
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You can take the derivatives of f(x) and g(x), but what about f(g(x)) or g(f(x))? The chain rule gives us this ability. Because most complex and hairy functions can be thought of the composition of several simpler ones (ones that you can find derivatives of), you'll be able to take the derivative of almost any function after this tutorial. Just imagine.

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07/12/2018
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Discover what magic we can derive when we take a derivative, which is the slope of the tangent line at any point on a curve.

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07/12/2018
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The topic that is now known as "calculus" was really called "the calculus of differentials" when first devised by Newton (and Leibniz) roughly four hundred years ago. To Newton, differentials were infinitely small "changes" in numbers that previous mathematics didn't know what to do with. Think this has no relevence to you? Well how would you figure out how fast something is going *right* at this moment (you'd have to figure out the very, very small change in distance over an infinitely small change in time)? This tutorial gives a gentle introduction to the world of Newton and Leibniz.

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07/12/2018
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We told you about the derivatives of many functions, but you might want proof that what we told you is actually true. That's what this tutorial tries to do!

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07/12/2018
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This lesson reviews how to change an improper fraction to a mixed number.

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Salman Khan
02/20/2011
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This 4-minute video lesson introduces Khan's series on complex numbers.

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Salman Khan
07/12/2018
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This single minute video lesson looks at how to add complex numbers.

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Salman Khan
07/12/2018
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This 4-minute video lesson give an example of a complex conjugate.

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Salman Khan
07/12/2018
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This 5- minute video lesson shows how to divide complex numbers.

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Salman Khan
07/12/2018
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This 4-minute video lesson looks at the imaginary roots of negative numbers.

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Salman Khan
07/12/2018
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This 6-minute video lesson explains how to multiply complex numbers.

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