# Math Help - contour integration problem

1. ## contour integration problem

i'm having trouble trying to evaluate the following contour integration :

$\oint _{C}\frac{ds}{s^{n+1}}$

where the contour C encloses the right half plane .

i'm having crazy results !! i need an explanation of the work .

2. Originally Posted by mmzaj
i'm having trouble trying to evaluate the following contour integration :

$\oint _{C}\frac{ds}{s^{n+1}}$

where the contour C encloses the right half plane .

i'm having crazy results !! i need an explanation of the work .
If $n\not = 0$ then you can find the primitive.
And so the integral works out to be zero.

3. thanks for the quick response , but could you elaborate please ? the problem is a part of my research on control theory . and i'm really not into complex analysis .