- #1

- 98

- 0

## Homework Statement

Evaluate the integral along the path given:

integral(along a(t) of (b^2-1)/(b^2+1) db ) where a(t)=2*e^(it) , 0 <= t <= 2*pi

## Homework Equations

none

## The Attempt at a Solution

I am thinking of using the Residue Theorem.

I think there are poles at -i and +i.

But not sure what to do to show this explicitly.