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