Primitive of Reciprocal of Hyperbolic Cosine of a x

Theorem

 * $\ds \int \frac {\d x} {\cosh a x} = \frac {2 \map \arctan {e^{a x} } } a + C$

Also see

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


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


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


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


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