Involving tan-1(1/(-z)1/2)
Involving tan-1(1/(-z)1/2) and coth-1(z1/2)
Involving tan-1(1/(-z)1/2) and coth-1(1/z1/2)
Involving tan-1(1/(-z)1/2) and coth-1(1/1/z1/2)