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Find the value of x of the fourier series defined by

  1. Apr 28, 2015 #1
    1. The problem statement, all variables and given/known data
    upload_2015-4-29_4-13-1.png

    2. Relevant equations
    upload_2015-4-29_4-14-32.png

    3. The attempt at a solution
    http://imgur.com/7TRWjBg

    I don't really get what it's asking. I don't know how to define a fourier series when the boundaries for X are between non-multiples of Pi. On top of that, it has one boundary that has 4<x<2Pi. How can it be between 4 and 2 Pi? My attempt at a solution seems like it has to be totally the wrong way to go about it
     
  2. jcsd
  3. Apr 28, 2015 #2

    LCKurtz

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    Your function is defined between ##0## and ##2\pi##, with a couple of jump discontinuities. So you have the given ##f(x)## and its FS ##S(x)##. Do you know what the Dirichlet conditions are? Look in your book for that. It will tell you something about when ##f(x) = S(x)## and when it doesn't. This problem does not involve calculating the FS.
     
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