Create MATLAB® variables to represent the following matrices, and use them in the exercises that follow. The correct answers can be found on the Pearson website. 8 3 22 a = [12 17 3 6] b = 1 3 17 4 6. 1. Assign to the variable x1 the value in the second column of matrix a. This is sometimes represented in mathematics textbooks as element a1,2 and could be expressed as x1 = a1,2. 2. Assign to the variable x2 the third column of matrix b. 3. Assign to the variable x3 the third row of matrix b. 4. Assign to the variable x4 the values in matrix b along the diagonal (i.e., elements b1.1, b2.2, and b3,3). 5. Assign to the variable x5 the first three values in matrix a as the first row and all the values in matrix b as the second through the fourth row. 6. Assign to the variable x6 the values in matrix c as the first column, the values in matrixb as columns 2, 3, and 4, and the values in matrix a as the last row. 7. Assign to the variable x7 the value of element 8 in matrix b, using the single-index-number identification scheme. 8. Convert matrix b to a column vector named x8.

Define, A = Find x. Hint: use numpy.linalg.inv and the @operator for matrix multiplication. 3 6 2 b = 10 5 2 1 7 5 Y = 3 Ax + b = Y N