The Student Room Group
Uni students - Complete our survey >>
Uni students - Complete our survey >>
Uni students - Complete our survey >>

Summing of series

Hey could anyone shed light on how to find the sum of the following sequence?
1*n^2 + 2*(n-1)^2+...+n*1^2

Thanks
Try adding the series n^3 + (n-1)^3 + ... + 2^3 + 1^3 (whose sum is a standard result).
Reply 2
Avatar for mathssgeek
mathssgeek
OP
1
thanks :smile:
Original post by DFranklin
Try adding the series n^3 + (n-1)^3 + ... + 2^3 + 1^3 (whose sum is a standard result).
Reply 3
Avatar for mathssgeek
mathssgeek
OP
1
Original post by TeeEm
Write the series compactly in SIGMA notation.
Expand the summand
Then it is all standard results
Factorize at the end



just started the course, so i still am not quite sure how i would write this sequence in sigma notation :smile:
Reply 4
Avatar for mathssgeek
mathssgeek
OP
1
thank you so much :smile:
Original post by TeeEm
well I cannot give you any more explicit help than the one I gave you so far...
luckily this question appears in one of my future papers (not formatted yet) so here it is
IYGB FP2.jpg

Quick Reply

Related discussions

Latest

Trending

Trending

Articles for you