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July 4, 2015

Homework Help: Algebra Help Inverse One-to-one

Posted by Lynn on Friday, March 28, 2008 at 5:20pm.

I need to know if I have done this correctly.

Problem
If f is one-to-one, find an equation for its inverse.
f(x)=x^3-5
y=x^3-5
x=y^3-5
5+x=y^3-5+5
5+x=y^3
My answer:
y^3=5+x
3y=35+x
y=35+x
f^-1(x)35+x

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