. calculate the productab, ac, ad, bc, ba, ca, atd, and act, if these are possible. if not, explain the reason for 𝑨 = [ 4 −1 −2 1 ], 𝑩 = [2 1 −1], 𝑪 = [−1 2 3 0 0 1], 𝑫 = [7 4] in matlab