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)