Primitive of Square of Hyperbolic Secant of a x over Hyperbolic Tangent of a x

Theorem

 * $\ds \int \frac {\sech^2 a x \rd x} {\tanh a x} = \frac 1 a \ln \size {\tanh a x} + C$

Also see

 * Primitive of $\dfrac {\csch^2 a x \rd x} {\coth a x}$