Involving sech^{-1}(z^{2}+1/z^{2}-1)

Involving sech^{-1}(z^{2}+1/z^{2}-1) and tan^{-1}(z)

Involving sech^{-1}(z^{2}+1/z^{2}-1) and tan^{-1}(1/z)