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## Homework Statement

Ok, working on a inverse function question, and I got stuck with something.

Can someone explain the steps that makes this possible here. Something I am missing :(

f(x) = √(x^3 + x^2 + x + 1)

How is the inverse of the above function this...

3x^2 + 2x + 1 / 2√(x^3 + x^2 + x + 1)

## Homework Equations

## The Attempt at a Solution

I just looked at f(x) = √(x^3 + x^2 + x + 1) and went:

1/2(3x^2 + 2x + 1)^-1/2

Thats as far as I got...:(