cosh
definition and properties - see
Functions - Theory - Elementary functions - Hyperbolic functions
derivative - see
Derivatives - Theory - Introduction - Elementary derivatives
expansion - see
this problem
in Series - Solved Problems - Series of functions
identities - see
Functions - Theory - Elementary functions - Hyperbolic functions
integral of - see
Integrals - Theory - Methods of integration - Elementary integrals
and
Integrals - Methods Survey - Methods of integration - Trigonometric integrals