Involving coth-1(1/(z2-1)1/2+c z)
Involving coth-1(1/(z2-1)1/2+z) and tanh-1(z)
Involving coth-1(1/(z2-1)1/2+z) and tanh-1(1/z)
Involving coth-1(1/(z2-1)1/2-z) and tanh-1(z)
Involving coth-1(1/(z2-1)1/2-z) and tanh-1(1/z)
