Inverse Functions - Cool math Algebra Help Lessons - What Are Inverse Functions and What Do They Do?

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Coolmath Algebra
Inverse Functions Lesson 1 - What Are They and What Do They Do? (page 2 of 3)
---- This algebra lesson explains the concept of inverse functions

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Let's do another one:

Think of a number -- make it positive...

Now, square it... Then, take the square root of that. What do you get?

The number you started with!

Check it out:

4 -> ( )^2 -> 16 -> square root( ) -> 4

So, these guys are inverse functions:

g( x ) = square root( x )

Continued on the next page

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