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})