Manipulating Matrices 4.1 Create the following matrices, and use them in the exercises that follow 15 3 22 3 8 5[12 18 5 2] 14 3 82 (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 (c) Combine matrix b and matrix d to create matrix f, a one-dimensional (d) Create a matrix g from matrix a and the first three elements of matrix c, (e) Create a matrix h with the first element equal to as, the second ele- matrix with three rows and two columns. matrix with six rows and one column with four rows and three columns. ment equal to n2, and the third element equal to b