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Homework Help: Limit to infinity

  1. Oct 3, 2012 #1
    1. The problem statement, all variables and given/known data

    Find the limit as n tends to [itex]\infty[/itex] of:


    2. Relevant equations

    3. The attempt at a solution

    I know that (-1)^n alternates between 1 and -1.
    I also know that the limit of 1/n is 0. But I don't know how to compute the above limit.
    Any ideas will be appreciated. Thank you.
  2. jcsd
  3. Oct 3, 2012 #2
    Think about what each sequence is in between.
  4. Oct 3, 2012 #3


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    Staff Emeritus
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    Do you know the squeeze theorem?
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