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Integrating sin(x) exp(sin(x))

  1. Jan 15, 2014 #1
    Hello Physics Forum,

    I am trying to find an analytic solution to an equation of the form ∫sin(x/a) exp(b sin(x/a)) dx. I have tried integration by parts and all the usual tricks but can't seem to get anywhere

    Thanks in advance for your help

  2. jcsd
  3. Jan 15, 2014 #2
    You can express the undefined integral on the form of an infinite series, but not on a closed form with the elementary and current special functions.
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