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Summation identities

  1. Sep 5, 2009 #1
    Hi guys,

    sry if i asked a silly qns. Is the below equivalent is true???

    untitled.gif
     
  2. jcsd
  3. Sep 5, 2009 #2

    jgens

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    Gold Member

    No, that's not correct. Using your limits of summation you should have:

    [tex]\sum_{i = 0}^{n-1} i = \frac{n(n-1)}{2}[/tex]
     
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