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Homework Help: Couchy theorem question

  1. Dec 5, 2008 #1
    the question and the solution in this link: (you can enlarge by one click on it)
    http://img139.imageshack.us/img139/4074/29783975xs2.gif [Broken]

    the key of solving these question is picking the variables
    i dont know how they decided to pick those variables???
     
    Last edited by a moderator: May 3, 2017
  2. jcsd
  3. Dec 5, 2008 #2

    HallsofIvy

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    Science Advisor

    I can't make heads or tails out of that. You ask "what is the purpose of this process" but I don't see how anyone can tell you that when you haven't said what problem this is supposed to be solving.
     
  4. Dec 6, 2008 #3
    i need to prove the expression
    which is located above the astrix

    for that they choose h(x) and y(x)
    and make couchy theorem on them
    i know that its no completely solved
    i know what to do once i build the variables

    i cant understand by what logic they chose the h(x)=f(x)/g(x) y(x)=1/g(x)


    ??
     
  5. Dec 6, 2008 #4
    they are doing some process on the input expression

    (which i need to prove) and after that they chose the variables in a certain way
    i cant see what the were trying to do in the proccess
    and what lead them to choose this variables??
     
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