## Inverse of cubic functions

Is there a way (algebraic or otherwise) to find the inverse function of a cubic polynomial?

For example:
y(x) = x³+x-9
y-1(x) = ?
 PhysOrg.com science news on PhysOrg.com >> City-life changes blackbird personalities, study shows>> Origins of 'The Hoff' crab revealed (w/ Video)>> Older males make better fathers: Mature male beetles work harder, care less about female infidelity
 Recognitions: Homework Help Science Advisor Yes but it is big and nasty. In the same way you can have: $$y = ax^2 + bx + c$$ $$ax^2 + bx + (c - y) = 0$$ $$x = \frac{-b \pm \sqrt{b^2 - 4a(c-y)}}{2a}$$ You can do it for cubic equations with this equation: http://www.math.vanderbilt.edu/~schectex/courses/cubic/
 Thanks. Just what I was looking for.

 Similar discussions for: Inverse of cubic functions Thread Forum Replies Calculus & Beyond Homework 0 General Math 12 Calculus 3 Precalculus Mathematics Homework 9 Introductory Physics Homework 0