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

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

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

Involving sech^{-1}(z^{2}+1/2z) and tanh^{-1}(i z^{r})