Primitive of Hyperbolic Cosine Function

Theorem

 * $\displaystyle \int \map \cosh x \rd x = \map \sinh x + C$

where $C$ is an arbitrary constant.

Proof
From Derivative of Hyperbolic Sine Function:
 * $\map {\dfrac \d {\d x} } {\sinh x} = \map \cosh x$

The result follows from the definition of primitive.