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Homework Help: Maclaurin formula

  1. Mar 16, 2006 #1

    Nea

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    Analyze by Maclaurin formula:
    $e^{ix}$
     
  2. jcsd
  3. Mar 16, 2006 #2

    Zurtex

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    Do you know the 'formula' for ex? If so, try substituting ix for x.
     
  4. Mar 16, 2006 #3
    You could also do it by looking at the power series of cosx and sinx, and then multiply the sine power series by i and then add the power series of cos on to it, so you get [itex] cosx + isinx [/itex]. Either way will get you the same answer, and the first method would probably be a little quicker.
     
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