Primitive of Hyperbolic Secant of a x

Theorem

 * $\displaystyle \int \operatorname{sech} a x \ \mathrm d x = \frac {2 \arctan \left({e^{a x} }\right)} a + C$

Also see

 * Primitive of $\sinh a x$
 * Primitive of $\cosh a x$
 * Primitive of $\tanh a x$
 * Primitive of $\coth a x$
 * Primitive of $\operatorname{csch} a x$