Problem5 l5 points) If the matrices { Al , A2 , ??, A4, As) have the following dimensions: Ai is 5 x4 A 2 is 4x7 As is 7x3 A4 is 3 x9 As is 9 x 6 in the box below give: (1) the corresponding 5x5 "m" table in which m[ili] is the minimum number of scalar multiplications sufficient to compute the product Ai Ai+A; and.. (2) the minimum-cost parenthesization for the matrix product AiA2A3A4As