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Mr.Math
 3 years ago
Find the sum \(\large \sum_{k=1}^{n} k!(k^2+k+1).\)
Mr.Math
 3 years ago
Find the sum \(\large \sum_{k=1}^{n} k!(k^2+k+1).\)

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FoolForMath
 3 years ago
Best ResponseYou've already chosen the best response.2\( \large \sum \limits_{k=1}^{n} k!(k^2+k+1) = (n+1)!(n+1)1 \) PS: Latex Tip included ;)

Mr.Math
 3 years ago
Best ResponseYou've already chosen the best response.3You should show work, so others can learn :)

FoolForMath
 3 years ago
Best ResponseYou've already chosen the best response.2One more hint, \( \large \sum \limits_{k=1}^{n} k\times k! = (n+1)! 1\)

FoolForMath
 3 years ago
Best ResponseYou've already chosen the best response.2oops MR.Math is great :)

Mr.Math
 3 years ago
Best ResponseYou've already chosen the best response.3lol, I already know the answer. I just wanted to post something, and I think it's a nice problem.

FoolForMath
 3 years ago
Best ResponseYou've already chosen the best response.2Mr.Math here: http://openstudy.com/study#/updates/4f2ebf12e4b0571e9cbaf294 ;)
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