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Discrete Question

  1. Mar 2, 2010 #1
    Can anyone help me out with this one?

    I need to find an explicit formula for:

    n 2
    ∑ i

    I was already asked to find the explicit polynomial formula for the above equation which is

    n·(n + 1)·(2·n + 1)

    I'm not sure on what the difference is between the 2 formulas.

  2. jcsd
  3. Mar 3, 2010 #2

    Gib Z

    User Avatar
    Homework Helper

    Welcome to PF.

    You are correction in your suspicion, the explicit polynomial formula is also the explicit formula.
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