Chain rule
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| <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>