Exercise 9

6 = n(n + 1)(2n + 1) 6 0 Exercise 8. Use the above method to verify that 1 + 23 + 33 + 43 +.n3 - n(n+1)2 2 Exercise 9. (a) Find a generating function for the sequence products 0(-1), 1(0), 2(1), 3(2), ... (b) Use the result in part (a) to obtain a formula for Ck_ k(k - 1)