Chain rule

<math>\frac{d}{dx} \sin x=?\,</math>

This article/section deals with mathematical concepts appropriate for late high school or early college.

The chain rule in calculus is a formula for determining the derivative of a composite function:

<math>f(g(x))' = f'(g(x))\times g'(x)</math>

The chain rule can also be expressed as:

<math>\frac {dy}{dx} = \frac {dy} {du} \times \frac {du}{dx}.</math>