# Thread: Inverse of polynomial function

1. ## Inverse of polynomial function

Does anybody know if there is any method to find the inverse of such a function like $\displaystyle f(x)=x^3+px+q$. I used an online calculator and it returned

wich is very complicated. Is there any alghoritm?

2. ## Re: Inverse of polynomial function

It's unlikely you can get a simpler formula. See Cardano's formula.