1. The problem statement, all variables and given/known data Compute the following integral around the path S using Cauchys integral formula for derivatives: [itex]\int[/itex]ez / z2 Integral path S is a basic circle around origin. Then, use the result to compute the following integral [itex]\int[/itex] ecos (x) cos(sin (x) - x) dx from 0 to ∏ 2. Relevant equations Cauchy integral formula: http://en.wikipedia.org/wiki/Cauchy's_integral_formula 3. The attempt at a solution I was able to compute the first part and got 4∏i. But I'm stuck in second part. How I'm supposed to use the result I got in first part to compute the second? Any hint for me?