# Primitive of Hyperbolic Cosecant Function

$\displaystyle \int \csch x \rd x = -\ln \size {\csch x + \coth x} + C$
where $\csch x + \coth x \ne 0$.
$\displaystyle \int \operatorname{csch} x \ \mathrm d x = -2 \coth^{-1} \left({e^x}\right) + C$