/ 2 \ 2 | cosh (x)| 4*x*cosh(x) 2*log(sinh(x)) + x *|1 - --------| + ----------- | 2 | sinh(x) \ sinh (x)/
/ / 2 \ \ | 2 | cosh (x)| | | x *|1 - --------|*cosh(x)| | / 2 \ | 2 | | | | cosh (x)| 3*cosh(x) \ sinh (x)/ | 2*|3*x*|1 - --------| + --------- - -------------------------| | | 2 | sinh(x) sinh(x) | \ \ sinh (x)/ /