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})