# What is the first step to finding the critical points of a function?

##### 1 Answer
Sep 21, 2014

There are basically two way to be a critical value $c$: 1. $f ' \left(c\right) = 0$
or 2. $f ' \left(c\right)$ is undefined.

The first step to find a critical value is to find the derivative $f ' \left(x\right)$ then set it equal to $0$ to see if you can find its zeros, which are critical values of $f$. The second step is to find x-values that make $f ' \left(x\right)$ undefined if any.