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Homework Help: Trick Question

  1. Apr 16, 2007 #1
    1. The problem statement, all variables and given/known data

    Find the limit of sequence if it converges; otherwise indicate divergence.

    a_n=(5-9n+6n^4)/(7n^4+5n^3-3)

    answers

    a=6/7
    b=-2
    c=5/7
    d=diverges

    2. Relevant equations

    none

    3. The attempt at a solution

    The limit of A_n is equal to 6/7 wich is one of the answers but, I thought that if the limit dosen't equal zero then it is divergent? Any help would be great.

    Thanks
     
  2. jcsd
  3. Apr 16, 2007 #2
    You may be confusing sequences with series. You question involves sequences
     
  4. Apr 16, 2007 #3
    Well now I feel stupid. I can't believe I missed that. For some reason I thought it was saying series. Thanks for pointing that out.
     
  5. Apr 16, 2007 #4
    :rofl: yeah, the trickiest questions are the one where we don't dare to spot the obvious. I can't count how many times this happens to me with math problems.
     
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