
(b) Find Σ1-1 (k” _ (k-1)3). (b) Show that 5%2 = n(n + 1)(2n + 1) k-1 (Hint: Use the formula Ση-1 k-(n tl).) Show transcribed image text
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(b) Find Σ1-1 (k” _ (k-1)3). (b) Show that 5%2 = n(n + 1)(2n + 1) k-1 (Hint: Use the formula Ση-1 k-(n tl).) Show transcribed image text
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