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Homework Help: Complex Fourier Series

  1. Aug 14, 2010 #1
    1. The problem statement, all variables and given/known data
    Find the complex fourier series of the periodic function

    f(t)=2sin(πt) 0 < t < 1 and f(t+1) = f(t) for all t. (π is pi)


    2. Relevant equations
    http://upload.wikimedia.org/math/9/d/7/9d7f73fbcba87cbff485e66646aa541d.png
    http://upload.wikimedia.org/math/5/2/8/52890b286b5e8481ee9d4d56f45081ac.png
    http://upload.wikimedia.org/math/b/0/6/b06b197a31293ddd3a9b3812f419259d.png



    3. The attempt at a solution
    ive tried many times using the forumla's and trying to rearrange to get exponentials but i always end up with something that looks really wrong, can someone point out any simplifications that can be made and do i need to integrate by parts (even though i cant see how that can be done). Any help will be greatly appriciated. Thanks
     
  2. jcsd
  3. Aug 14, 2010 #2
    I haven't worked with fourier analysis or complex variables, but I would say to work with the first equation, the c_n. You can use integration by parts by treating i and n as constants and plugging in f(t) into the spot for f(x). That's where I would start, since after you find c_n the rest is cake.
     
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