Primitive of Hyperbolic Cosine of a x over x

Also see

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


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


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


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


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