5.5 The Substitution Rule/33

$\int {\sqrt {\cot(x)}}\csc ^{2}{(x)}dx$

Failed to parse (unknown function "\begin{align}"): {\displaystyle \begin{align} u &= \cot{(x)} \\[2ex] du &= \-csc{(x)} \\[2ex] \end{align} }