1. Show that the function f(x) = x5 -x3 +2x is invertible. Compute the derivative of f-1
The Attempt at a Solution
To find f-1 I switched x and y which gave me x = y5 - y3 + 2y
this is where i got stuck because I am not sure how to solve for y after that step.
Can the y5 - y3 become y2?