Unformatted text preview: last term, and a summation containing the remaining terms. (d) (3 points) Find the values of the sum s ( n ) = ∑ n-1 i =2 3 i ( i-1) for values of n from 3 to 5. (e) (2 points) Find a closed form for ∑ n k =1 k 3 . Hint: look it up in a table of closed forms for summations. (f) (4 points) Using your result from part (e), ﬁnd closed forms for ∑ n k =1 k 3 ( n-1) and ∑ n k =2 ( n + k 3 ) . 1...
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- Fall '07
- Summation, break up, 1 k, new summation