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Math Help - isolated singularities

  1. #1
    Junior Member
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    isolated singularities

    hello;
    I have simple question,
    Can you determine whether the function f(z)=sinz/(e(iz) +1 ) has removable or simple poles at z=Pi+2Pik wher k is an integer

    I am a little bet confusing,

    Thank you in advance
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  2. #2
    MHF Contributor Drexel28's Avatar
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    Quote Originally Posted by fuzzy topology View Post
    hello;
    I have simple question,
    Can you determine whether the function f(z)=sinz/(e(iz) +1 ) has removable or simple poles at z=Pi+2Pik wher k is an integer

    I am a little bet confusing,

    Thank you in advance
    What is confusing? What makes a a singularity removable, opposed to being a simple pole?
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