Derivative with Chain Rule: $$\cot^{-1}u$$

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Derivative with Chain Rule: $$\cot^{-1}u$$

## Formula

$$\frac{d}{dx}(\cot^{-1}u)=-\frac{u'}{1+u^2}$$

## Usage

- Used when the argument of inverse cotangent is a function of $$x$$.

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