Involving cot^-1(2 (-z)^1/2/1+z)

Involving cot^-1(2 (-z)^1/2/1+z) and tanh^-1(z^1/2)

Involving cot^-1(2 (-z)^1/2/1+z) and tanh^-1(1/z^1/2)

Involving cot^-1(2 (-z)^1/2/1+z) and tanh^-1(1/z^1/2)