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Contour Integrals, which contour to use?

  1. Mar 11, 2012 #1
    1. The problem statement, all variables and given/known data
    http://img404.imageshack.us/img404/3952/contf.png [Broken]


    3. The attempt at a solution
    Is there a set of rules or postulate that refer to which contour to use for specific integrals?
    I tried to use the residue theorem for the first integral but I didn't get the right answer
     
    Last edited by a moderator: May 5, 2017
  2. jcsd
  3. Mar 11, 2012 #2
    No, there is no general rule, but it depends entirely on the integral which path to chose.
    What have you done exactly for a)? Which path did you chose and what result did you get?
     
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