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Math Help - Complex analysis: Find an upper bound

  1. #1
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    Question Complex analysis: Find an upper bound

    Hello

    I'm preparing for an exam, and I was trying to solve the following question:

    Complex analysis: Find an upper bound-upper.png

    My biggest problem is the cos(z).
    This is what I have now:

    integral(|cosz| + |e^|z||/||z|-1|) but what is the next step?
    Many thanks in advance!!!
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  2. #2
    MHF Contributor

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    Re: Complex analysis: Find an upper bound

    Misunderstood the question.
    Last edited by HallsofIvy; April 13th 2012 at 09:37 AM.
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