Involving tan-1(z/(1+z2)1/2+a)
Involving tan-1(z/(1+z2)1/2+1) and coth-1(i z)
Involving tan-1(z/(1+z2)1/2+1) and coth-1(i/z)
Involving tan-1(z/(1+z2)1/2-1) and coth-1(i z)
Involving tan-1(z/(1+z2)1/2-1) and coth-1(i/z)
