### Home > CALC > Chapter 3 > Lesson 3.3.2 > Problem3-107

3-107.

Oliver is trying to find the derivative of $f(x) = −4x^{3}$ at $x = 2$. He substituted and found that $f(2) = −32$. He then took the derivative and got $f^\prime(2) = 0$. What went wrong? Why didn't this work?

Consider the order of Oliver's steps.