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

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

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

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