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