Derivative of an Inverse Function

Rarely Tested

Derivative of an Inverse Function

If $$y=f(x)$$ is invertible and:

$$f'(x)\neq0$$

then:

$$\frac{d}{dx}f^{-1}(x)=\frac{1}{f'(f^{-1}(x))}$$

Usage

- Used to differentiate inverse functions without explicitly finding their inverse equations.

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