SOLUTION: This is a problem from a past exam, used for studying, but I'm not able to answer it - which doesn't bode well for the upcoming exam :-( . Give a closed form expression of the su

Question 967181: This is a problem from a past exam, used for studying, but I'm not able to answer it - which doesn't bode well for the upcoming exam :-(
.
Give a closed form expression of the summation
SIGMA n[on top]
i=1[on bottom] i
Answer by jim_thompson5910(35256) (Show Source): You can put this solution on YOUR website!
This is something to memorize

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