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Prove that this series converges

  1. Oct 13, 2009 #1

    lom

    User Avatar

    [tex]
    \sum \frac{e^{in\theta}}{\sqrt{n}}\\
    [/tex]
    using Abel law
    ?
     
  2. jcsd
  3. Oct 13, 2009 #2

    Mark44

    Staff: Mentor

    What have you tried. To get help in this forum, you need to show some attempt at a solution.
     
  4. Oct 13, 2009 #3

    HallsofIvy

    User Avatar
    Staff Emeritus
    Science Advisor

    What is "Abel's law"?

    You have posted four consecutive questions with showing any effort of your own. You should have read, in threads you are asked to read when you registered, that you must show what you have tried.
     
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