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Laurent series expansion

  1. Apr 14, 2010 #1
    1. I am trying to calculate the laurent series expansion of the function 1/(1-z)² in the region 1<|z|


    2. None


    3. I can get an answer informally by doing the polynomial division like in high school, but I don't know if this is the right answer and in case it is I cannot prove it. Any help would be largely appreciated.
     
  2. jcsd
  3. Apr 14, 2010 #2
    Recall that if a function is analytic on a domain, then its Laurent series and Taylor series are identical. Do you know how to do the Taylor series expansion?
     
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