# Chain Rule

The chain rule is a formula for the derivative of the composition of two functions in terms of their derivatives.

Chain rule is a college-level concept that would be first encountered in a Calculus I course. It is an Advanced Placement Calculus AB topic and is listed in the California State Standards for Calculus.

### Prerequisites

Derivative: | A derivative is the infinitesimal rate of change in a function with respect to one of its parameters. |