Im using cauchy's integral formula,see aboveto solve the following integral

where is a circle of radius 4 centred at 0.

I have deduced that the function is not analytic at

I let and

so filling into cauchy's integral formula i got

Answer =

My problem lies in the fact that both both lie in .Therefore do i have to take both singularites into account when evaluating the integral using cauchy's integral formula???Thanks,

Piglet