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Why Is the Sum of 1/2 (n+1)/2?

  1. Jun 3, 2013 #1
    I don't understand why the answer to this summation:
    Ʃ 1/2
    i = 0

    is (n+1)/2
    Why isn't it just n/2?
  2. jcsd
  3. Jun 3, 2013 #2


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    Because the index starts at zero. 0,1,2,...n has n+1 terms.
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