Involving cosh-1(1-z/1+z)
Involving cosh-1(1-z/1+z) and coth-1((-z)1/2)
Involving cosh-1(1-z/1+z) and coth-1(1/(-z)1/2)
Involving cosh-1(1-z/1+z) and coth-1((-1/z)1/2)