Primitive of Reciprocal of Hyperbolic Secant of a x

Theorem

 * $\ds \int \frac {\d x} {\sech a x} = \frac {\sinh a x} a + C$

Also see

 * Primitive of $\dfrac 1 {\sinh a x}$


 * Primitive of $\dfrac 1 {\cosh a x}$


 * Primitive of $\dfrac 1 {\tanh a x}$


 * Primitive of $\dfrac 1 {\coth a x}$


 * Primitive of $\dfrac 1 {\csch a x}$