From Ramanujan to calculus cocreator Gottfried Leibniz, many of the world's best and brightest mathematical minds have belonged to autodidacts. And, thanks to the Internet, it's easier than ever to follow in their footsteps (or just study for that next big test). With this twopart installment from Internet pedagogical superstar Salman Khan's series of free math tutorials, you'll learn how to graph a rational function in collegelevel algebra.
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How To: Calculate Faster Than a Calculator

How To: Write a logarithm as a sum or difference of logarithms

How To: Use ">" (greater than) and "<" (less than) symbols

How To: Remember "greater than" & "less than" symbols

How To: Find a missing side of a triangle, similar to another

How To: Find the slope of a line given 2 points with fractions

How To: Find the area of a parallelogram using geometry

How To: Calculate the area of a parallelogram

How To: Convert between diameter and radius

How To: Find the average value of a function over an interval

How To: Do long division without a calculator

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How To: Do a rotation in Geometry

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How To: Use the upsidedown birthday cake method to find a GCF

How To: Find the formula of a piecewise function given a graph
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