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Thread: Prove this sum

  1. February 11th 2009, 02:50 AM #1
    mathaddict
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    Prove this sum

    Prove that

    <br /> \sum^{n}_{r=1}(1+r^2)r!=n(n+1)!<br />
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  2. February 11th 2009, 03:25 AM #2
    geld
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    Mathematical induction, my favourite.
    Attached Thumbnails Attached Thumbnails Prove this sum-cci00000.png  
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  3. February 11th 2009, 05:12 AM #3
    mathaddict
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    Thanks . Is it possible to do it besides using induction .
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« General Problem Solving | Finding Nth Term »

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