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