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Series: Definitions and Properties problem

  1. Apr 5, 2010 #1
    1. The problem statement, all variables and given/known data
    [PLAIN]http://img528.imageshack.us/img528/7061/37557155.jpg [Broken]

    2. Relevant equations

    3. The attempt at a solution
    i dont understand, what can possibly wrong with this :S
    I checked it so many times over and over but everything seems to be right..
    i dont even have this feeling about any of those that one is might be something else.. im 99.9% sure about everything
    Last edited by a moderator: May 4, 2017
  2. jcsd
  3. Apr 5, 2010 #2
    This: [itex]\{ a_n \}_{n=1}^m[/itex] is not a series (i.e. not a sum); this is a list of elements (i.e. a sequence).
  4. Apr 5, 2010 #3
    oh i see.. little word messed up my whole answer :/
    thanks man!
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