MIT grad shows how to find the limit at a finite value with a square root, (sin x)/x, or absolute value. To skip ahead: 5) for a SQUARE ROOT in the numerator or denominator (to RATIONALIZE by multiplying by the "CONJUGATE"), skip to time 1:14. 6) for a li...

From NancyPi

MIT grad shows how to find the vertical asymptotes of a rational function and what they look like on a graph. To skip ahead: 1) For the STEPS TO FIND THE VERTICAL ASYMPTOTE(S) and an example with two vertical asymptotes, skip to 0:19. 2) For an example in...

From NancyPi

MIT grad shows how to use the elimination method to solve a system of linear equations (aka. simultaneous equations). To skip ahead: 1) For a BASIC example where terms cancel right away when you add the equations, skip to 0:25. 2) For an example in which ...

From NancyPi

MIT grad shows how to convert from radians to degrees, convert from degrees to radians, and explains what radians and degrees mean. To skip ahead: 1) For converting from DEGREES TO RADIANS, skip to time 4:50. 2) For converting from RADIANS TO DEGREES, ski...

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MIT grad shows how to find derivatives using the rules (Power Rule, Product Rule, Quotient Rule, etc.). To skip ahead: 1) For how and when to use the POWER RULE, constant multiple rule, constant rule, and sum and difference rule, skip to time 0:22. 2) For...

From NancyPi

MIT grad shows how to use the substitution method to solve a system of linear equations (aka. simultaneous equations). To skip ahead: 1) For a BASIC SUBSTITUTION example, skip to time 0:19. 2) For an example where it's TRICKIER to solve and also involves ...

From NancyPi

MIT grad shows how to find the limit as x approaches infinity or negative infinity. To skip ahead: 1) For a POLYNOMIAL or CONSTANT in the limit expression, skip to 1:56. 2) For a RATIONAL ("FRACTION") expression in the limit, skip to 8:49. 3) For somethin...

From NancyPi

MIT grad shows how to find any limit as x approaches a finite value/constant value (and not infinity). To skip ahead: 1) For an example of PLUGGING IN/SUBSTITUTION, skip to time 1:45. 2) For FACTORING to simplify, skip to 3:53. 3) For GETTING A COMMON DEN...

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MIT grad shows how to find the equation of a tangent line using derivatives (Calculus). To skip ahead: 1) For a BASIC example, skip to time 0:44. 2) For a more complex example that uses the CHAIN RULE, skip to time 5:58. 3) For an example that uses TRIG F...

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MIT grad shows how to simplify radical expressions, specifically square root expressions, into their simplest form ("Simplified Radical Form" or "SRF Form"). To skip ahead: 1) for a PERFECT SQUARE under the root like sqrt(16) skip to time 1:29. 2) for a S...

From NancyPi

MIT grad shows how to find sin, cos, and tan using SohCahToa as well as the csc, sec, and cot trig functions. Nancy formerly of MathBFF explains the steps.
For MORE TRIG: how to convert between radians and degrees, jump to: https://youtu.be/l6hSY2Pcch0
...

From NancyPi

MIT grad shows how to solve any quadratic equation by factoring. To skip to the shortcut trick, go to time 6:11. Nancy formerly of MathBFF explains the steps.
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From NancyPi

MIT grad shows how to factor quadratic expressions. If you want to skip to the shortcut method, jump to 5:06. Nancy formerly of MathBFF explains the steps.
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MIT grad shows a surefire way to find the domain of any function. To skip ahead: 1) For POLYNOMIAL only, skip to time 0:45. 2) For FRACTION only, skip to time 1:44. 3) For SQUARE ROOT only, skip to 5:08. 4) For SQUARE ROOT ON BOTTOM of Fraction, skip to 8...

From NancyPi

MIT grad shows how to find the horizontal asymptote (of a rational function) with a quick and easy rule. Nancy formerly of MathBFF explains the steps.
For how to find VERTICAL asymptotes instead, jump to the video: https://youtu.be/V137qmDN9Qw
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MIT grad explains how to do long division with polynomials. Here I show clear steps to divide two polynomials using long division. I give two examples, one basic example as an introduction to the steps, and one more advanced example. Nancy formerly of Mat...

From NancyPi

MIT grad explains how to find the vertex of a parabola. This is a simple, fast way to identify the vertex, taken either from the equation of a parabola in "standard form," or from the equation in "vertex form." Nancy formerly of MathBFF explains the steps...

From NancyPi

Nancy, formerly of MathBFF, explains why she moved to a new math channel.
Follow Nancy on Instagram: https://instagram.com/mathnancy
Twitter: https://twitter.com/nancypi
For math help and all new videos, subscribe to Nancy's new channel, NancyPi, or go ...

From NancyPi

Hi! It's Nancy, formerly of MathBFF. This is my new channel! All my new videos will be here! I'm really glad to see you found me over here. Please subscribe here for all my new videos, and please spread the news! I'm moving to this new channel and will be...

From NancyPi

MIT grad shows how to do a binomial expansion with the Binomial Theorem and/or Pascal's Triangle. To skip ahead: 1) for HOW TO EXPAND a BINOMIAL raised to a power, like (x + 3)^5, skip to time 0:57; 2) for how to find the BINOMIAL COEFFICIENTS with the F...

From NancyPi