# Math Help - Homework question help / inverse functions

1. ## Homework question help / inverse functions

I was working through some hmwk problelms and couldn't get the right answer for this one. Figured I would post and see if anyone could help:

Find the inverse of f(x) = (e^2x) / (5 + e^2x)

Thanks for any help.

2. ## Re: Homework question help / inverse functions

Originally Posted by dgove42
I was working through some hmwk problelms and couldn't get the right answer for this one. Figured I would post and see if anyone could help:
Find the inverse of f(x) = (e^2x) / (5 + e^2x)
Exchanging x for y can you get:
$e^{2y}=\frac{5x}{1-x}~?$

3. ## Re: Homework question help / inverse functions

Thanks for the fast response.

How would I get the left side in terms of f(inverse)(x) = ???

i.e. How would the left side be only "y" instead of "e^2y"?