Product Rule for Derivatives/Examples/x times Cotangent of x

Examples of Use of Product Rule for Derivatives

 * $\map {\dfrac \d {\d x} } {x \cot x} = \cot x - x \cosec^2 x$

Proof
Let $u = x$.

Let $v = \cot x$.

Thus we have:
 * $y = u v$

and so: