2 (-(35*Power(k,8) + 8*Power(k,6)*(35 - 16*Sqrt(1 + Power(k,2)/Power(c - Complex(0,1)*k0,2)))*Power(c - Complex(0,1)*k0,2) + 16*Power(k,4)*(35 - 24*Sqrt(1 + Power(k,2)/Power(c - Complex(0,1)*k0,2)))*Power(c - Complex(0,1)*k0,4) + 64*Power(k,2)*(7 - 6*Sqrt(1 + Power(k,2)/Power(c - Complex(0,1)*k0,2)))*Power(c - Complex(0,1)*k0,6) - 128*(-1 + Sqrt(1 + Power(k,2)/Power(c - Complex(0,1)*k0,2)))*Power(c - Complex(0,1)*k0,8))/(2688.*Power(k,5)) + (35*Power(k,8) + 8*Power(k,6)*(35 - 16*Sqrt(1 + Power(k,2)/Power(2*c - Complex(0,1)*k0,2)))*Power(2*c - Complex(0,1)*k0,2) + 16*Power(k,4)*(35 - 24*Sqrt(1 + Power(k,2)/Power(2*c - Complex(0,1)*k0,2)))*Power(2*c - Complex(0,1)*k0,4) + 64*Power(k,2)*(7 - 6*Sqrt(1 + Power(k,2)/Power(2*c - Complex(0,1)*k0,2)))*Power(2*c - Complex(0,1)*k0,6) - 128*(-1 + Sqrt(1 + Power(k,2)/Power(2*c - Complex(0,1)*k0,2)))*Power(2*c - Complex(0,1)*k0,8))/(1344.*Power(k,5)) - (35*Power(k,8) + 8*Power(k,6)*(35 - 16*Sqrt(1 + Power(k,2)/Power(3*c - Complex(0,1)*k0,2)))*Power(3*c - Complex(0,1)*k0,2) + 16*Power(k,4)*(35 - 24*Sqrt(1 + Power(k,2)/Power(3*c - Complex(0,1)*k0,2)))*Power(3*c - Complex(0,1)*k0,4) + 64*Power(k,2)*(7 - 6*Sqrt(1 + Power(k,2)/Power(3*c - Complex(0,1)*k0,2)))*Power(3*c - Complex(0,1)*k0,6) - 128*(-1 + Sqrt(1 + Power(k,2)/Power(3*c - Complex(0,1)*k0,2)))*Power(3*c - Complex(0,1)*k0,8))/(1344.*Power(k,5)) + (35*Power(k,8) + 8*Power(k,6)*(35 - 16*Sqrt(1 + Power(k,2)/Power(4*c - Complex(0,1)*k0,2)))*Power(4*c - Complex(0,1)*k0,2) + 16*Power(k,4)*(35 - 24*Sqrt(1 + Power(k,2)/Power(4*c - Complex(0,1)*k0,2)))*Power(4*c - Complex(0,1)*k0,4) + 64*Power(k,2)*(7 - 6*Sqrt(1 + Power(k,2)/Power(4*c - Complex(0,1)*k0,2)))*Power(4*c - Complex(0,1)*k0,6) - 128*(-1 + Sqrt(1 + Power(k,2)/Power(4*c - Complex(0,1)*k0,2)))*Power(4*c - Complex(0,1)*k0,8))/(2688.*Power(k,5)) - (35*Power(k,8) + 8*Power(k,6)*(35 - 16*Sqrt(1 + Power(k,2)/Power(5*c - Complex(0,1)*k0,2)))*Power(5*c - Complex(0,1)*k0,2) + 16*Power(k,4)*(35 - 24*Sqrt(1 + Power(k,2)/Power(5*c - Complex(0,1)*k0,2)))*Power(5*c - Complex(0,1)*k0,4) + 64*Power(k,2)*(7 - 6*Sqrt(1 + Power(k,2)/Power(5*c - Complex(0,1)*k0,2)))*Power(5*c - Complex(0,1)*k0,6) - 128*(-1 + Sqrt(1 + Power(k,2)/Power(5*c - Complex(0,1)*k0,2)))*Power(5*c - Complex(0,1)*k0,8))/(13440.*Power(k,5)) + (35*Power(k,8) + 16*Power(k,4)*Power(k0,3)*(35*k0 - 24*Sqrt(-Power(k,2) + Power(k0,2))) + 128*Power(k0,7)*(k0 - Sqrt(-Power(k,2) + Power(k0,2))) + 64*Power(k,2)*Power(k0,5)*(-7*k0 + 6*Sqrt(-Power(k,2) + Power(k0,2))) + 8*Power(k,6)*k0*(-35*k0 + 16*Sqrt(-Power(k,2) + Power(k0,2))))/(13440.*Power(k,5)))/Power(k0,5)