Involving csch-1((2(1-z2)1/2/(1-(1-z2)1/2))1/2)
Involving csch-1((2(1-z2)1/2/(1-(1-z2)1/2))1/2) and coth-1(z)
Involving csch-1((2(1-z2)1/2/(1-(1-z2)1/2))1/2) and coth-1(1/z)