Define a sequence x = = (xn) as X1 = 2, n = 3+Xxn-1, for all n 2. > = (a) Find x2, x3 and 10 (b) Find a formula for the sequence c defined by Cn Pb17. Define a sequence a = (an) as a = 3, ak = a) Show that for all integers n 1: n i=1 7ak-1, for all integers k > 2. Xi bn = an = 3.72-1 b) Find a formula for the sequence b defined by n a ai i=1