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## Homework Statement

1. Show that the function f(x) = x

^{5}-x

^{3}+2x is invertible. Compute the derivative of f

^{-1}

at 2.

## The Attempt at a Solution

To find f

^{-1}I switched x and y which gave me x = y

^{5}- y

^{3 }+ 2y

this is where i got stuck because I am not sure how to solve for y after that step.

Can the y

^{5}- y

^{3 }become y

^{2}?

Thanks