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Series homework help problem again

  1. Sep 11, 2010 #1

    Aproximate this function around [tex]x_{i\alpha}=0[/tex]. I don't know how to do that? Any idea?
  2. jcsd
  3. Sep 11, 2010 #2


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    Science Advisor

    Re: Series

    x=0 ? Is this for all α and is there only one i?
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