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Integratation need help

  1. Sep 11, 2010 #1
    [tex]\int \frac{\sin x}{x }dx [/tex]
    Last edited: Sep 11, 2010
  2. jcsd
  3. Sep 11, 2010 #2


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    Re: integratation

    That anti-derivative cannot be written in terms of elementary functions. It can be written easily in terms of the "sine integral" function, Si(x):
    [tex]\int \frac {sin(x)}{x} dx= Si(x)[/tex]
    because that is exactly how Si(x) is defined!
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