Inverse Functions - Cool math Algebra Help Lessons - How to Tell If a Function Has an Inverse Function (One-to-One)

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Coolmath Algebra
Inverse Functions Bonus Lesson - How to Tell If a Function Has an Inverse Function (One-to-One) (page 2 of 3)
---- This algebra lesson gives an easy test to see if a function has an inverse function

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one-to-one?

a graph of f( x ) = x^( 2 ) ... it does not pass the horizontal line test

No! It fails the horizontal line test.

So		does NOT
have an inverse function.

Hey! Wait just a darn minute there, Skippy!

Did I just say that		does NOT have an inverse
function?

Yep, that's what I said.

But, didn't I say that the inverse of			was
	?

Nope! Not quite!

Continued on the next page

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