Derivative of an Inverse Relation

Rarely Tested

Derivative of an Inverse Relation

If:

$$x=f(y)$$

then:

$$\frac{dy}{dx}=\frac{1}{dx/dy}$$

provided:

$$\frac{dx}{dy}\neq0$$

Usage

- Used when the curve is more naturally expressed with $$x$$ as a function of $$y$$.

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