Involving tanh^-1(2(-z)^1/2/1-z)

Involving tanh^-1(2(-z)^1/2/1-z) and tan^-1(z^1/2)

Involving tanh^-1(2(-z)^1/2/1-z) and tan^-1(1/z^1/2)

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