# Homework Help: Using Cauchy's integral formula to evaluate integrals

1. May 7, 2016

### Woolyabyss

1. The problem statement, all variables and given/known data
Use Cauchy’s integral formula to evaluate the integral along γ(t) of (z/(z+9)^2)dz
where γ(t) = 2i + 4e^it , 0 ≤ t ≤ 2π.
2. Relevant equations
Cauchy's integral formula
3. The attempt at a solution
I was just wondering is the integral not just zero by Cauchy's theorem since (z/(z+9)^2) is holomorphic inside the circle defined by γ(t) ( the singularity at -9 is outside the circle ).

2. May 7, 2016

### Samy_A

Yes, that seems to be the case.