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Math Help - Summation proof

  1. #1
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    Summation proof

    Hey all, any help proving the following summation would be greatly appreciated!

    Σ from j=1 to k of j^2 = k(k+1)(2k+1) / 6

    Thank you!
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  2. #2
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    Quote Originally Posted by jstarks44444 View Post
    Hey all, any help proving the following summation would be greatly appreciated!

    Σ from j=1 to k of : k(k+1)(2k+1) / 6
    Have you written what you meant?
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  3. #3
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    Quote Originally Posted by jstarks44444 View Post
    Hey all, any help proving the following summation would be greatly appreciated!

    Σ from j=1 to k of j^2 = k(k+1)(2k+1) / 6

    Thank you!
    See...

    http://www.mathhelpforum.com/math-he...la-172620.html

    ... taking into account that is \displaystyle S_{1,n}= \frac{n\ (n+1)}{2} ...

    Kind regards

    \chi \sigma
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