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How to find this limit?

  1. Sep 9, 2009 #1
    Limn→∞ (n2/1+5+9+...+(4n-3))
     
  2. jcsd
  3. Sep 9, 2009 #2
    Since you apparently didn't take VietDao's suggestion, I'll tell you the answer is 1/2 and let you figure out if it's correct or not.
     
  4. Sep 9, 2009 #3
    I have no idea how to do it...so I am asking to give me a clue to this problem!
     
  5. Sep 9, 2009 #4

    mathman

    User Avatar
    Science Advisor
    Gold Member

    The denominator is an arithmetic series, which sums to 2n2 - n. Therefore the limit is 1/2.
     
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