# What is a rational function?

Oct 16, 2014

Definition

A rational function $r \left(x\right)$ is any function of the form

$r \left(x\right) = \frac{p \left(x\right)}{q \left(x\right)}$,

where $p \left(x\right)$ and $q \left(x\right)$ are polynomial functions.

I hope that this was helpful.