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HELP! Can anyone PLEASE give me a hand with this limit? THANKS! ;)

  1. Feb 9, 2008 #1
    1. Use the sandwich theorem to compute the limit as n goes to infinity of the sequence with the following nth elements:

    a(n) = [1 + sin(n*pi/3)cos(n*pi/5) ] / [n^0.5]

    I would really appreciate some help with this one guys. If you could please go slow with the answer as my trig is pretty shaky. Thanks for all your help! :)

    Cathy
    1. The problem statement, all variables and given/known data



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  2. jcsd
  3. Feb 9, 2008 #2

    Dick

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    You don't really have to use a lot of trig. -1<=sin(x)<=1 and the same for cos(x). No matter what x is. Suggest an upper bound for the value of the numerator.
     
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