1. Limited time only! Sign up for a free 30min personal tutor trial with Chegg Tutors
    Dismiss Notice
Dismiss Notice
Join Physics Forums Today!
The friendliest, high quality science and math community on the planet! Everyone who loves science is here!

Homework Help: Complex integration

  1. Jun 4, 2012 #1
    1. The problem statement, all variables and given/known data

    use residue theorem to integrate sinh(ax)/sinh(xpi) from -infinity to +infinity, a is between -pi and pi

    2. Relevant equations

    residue theorem

    . The attempt at a solution

    i tried rectangular trajection through 0 and ia/pi with the function sinh(az)/sinh(zpi) and some other trajectories but it doesn't really work
  2. jcsd
  3. Jun 4, 2012 #2


    User Avatar
    Science Advisor

    The residue theorem applies to integration over closed paths. What closed paths have you used?
Share this great discussion with others via Reddit, Google+, Twitter, or Facebook