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Math Help - Summation of k.k!

  1. #1
    Junior Member
    Joined
    Feb 2010
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    Summation of k.k!

    I'm trying to get a value for the summation of k.k! from k=1 to n in terms of a function of n.
    So far I've been going in circles. I would appreciate a hint.
    ---
    Edit:
    I found the answer - this site seems to act like a catalyst. Once I post something, I quickly solve it myself.
    It's (k+1)!-1
    Last edited by nahduma; April 18th 2010 at 11:54 PM. Reason: got the answer
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  2. #2
    Super Member Deadstar's Avatar
    Joined
    Oct 2007
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    Quote Originally Posted by nahduma View Post
    I'm trying to get a value for the summation of k.k! from k=1 to n in terms of a function of n.
    So far I've been going in circles. I would appreciate a hint.
    ---
    Edit:
    I found the answer - this site seems to act like a catalyst. Once I post something, I quickly solve it myself.
    It's (k+1)!-1
    That should be (n+1)!-1. (I imagine you that and it was just a typo but just in case...)
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