(a) Find the first four terms c0, c\, c2, and c3 of the convolutions for each of the following pairs of sequences.
i) an = 1, bn = 1, for all n ∈ N
ii) an = 1, bn = 2n, for all n ∈ N
iii) a0 = a1 = a2 = a3 = 1; an = 0, n ∈ N,
n ≠ 0 , 1, 2, 3; bn = l, for all ∈ N
(b) Find a general formula for cn in each of the results of part (a).