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Math Help - complex integrals

  1. #1
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    complex integrals

    hello,
    I wonder if someone can help me solve:
    1.what are the singularic points of f(z)
    2.how to solve the integral

    thank's
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  2. #2
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    Quote Originally Posted by avazim View Post
    hello,
    I wonder if someone can help me solve:
    1.what are the singularic points of f(z)
    2.how to solve the integral

    thank's
    z = 0 is a pole of order 3.
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  3. #3
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    i still not so understand why it is a pol in order 3?
    and after that to sole the intgeral i just need to find 2*pi*i*RES(f,0); 0 as order 3 ?
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  4. #4
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    Quote Originally Posted by avazim View Post
    i still not so understand why it is a pol in order 3?
    and after that to sole the intgeral i just need to find 2*pi*i*RES(f,0); 0 as order 3 ?
    To see why z = 0 is a pole of order 3, substitute the Maclaurin series for sin z and simplify ....
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