1. Create the following matrices, and use them in the exercises that follow: (20 points) a=1531438322582b=156c=[121852] a) Create a matrix called d from the third column of matrix a . b) Combine matrix b and matrix d to create matrix e, a two-dimensional matrix with three rows and two columns. c) Combine matrix b and matrix d to create matrix f, a one-dimensional matrix with six rows and one column. d) Create a matrix g from matrix a and the first three elements of matrix c, with four rows and three columns. e) Create a matrix h with the first element equal to a1,3, the second element equal to c1,2, and the third element equal to a2,1