Hi, Porf. Tao,
I was doing hw 5 section 4.4 no. 13 (a), and i simplified the problem
into (int 1/(z^2+1) along a circle) with i inside inside the circle. Actually,
i don't know if I have simplified the problem by doing this and I don't know
how to take the integeral from this point on.
I wonder if you can help me on this.
Thanks.
Connie