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How do you differentiate using the chain rule?
Maths
A-Level
England, Wales & NI

How do you differentiate using the chain rule?

The chain rule differentiates a function of a function: dy/dx = dy/du × du/dx. Differentiate the outside function, keep the inside unchanged, then multiply by the derivative of the inside. For example, y = (3x + 1)⁵ gives dy/dx = 5(3x + 1)⁴ × 3 = 15(3x + 1)⁴.

Formula
dy/dx = dy/du × du/dx
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