Involving sech^-1(1+z/1-z)

Involving sech^-1(1+z/1-z) and tanh^-1((-z)^1/2)

Involving sech^-1(1+z/1-z) and tanh^-1(1/(-z)^1/2)

Involving sech^-1(1+z/1-z) and tanh^-1((-1/z)^1/2)