Hi Piglet. Ain't that zero. Cauchy's Theorem and all. The function is entire right. Why is the integral of that over a closed contour zero then? Something about the Cauchy-Riemann equations, and Green's Theorem I think. Try and go over that proof then use Cauchy's Theorem to conclude the integral is zero or well, just integrate it the regular way and show the antiderivative is analytic then since it's a closed contour.