2nd  Assessment

Consider a 3x3 matrix denoted by A with first row [-1  3  2], second row [0  4  1] and third row [1  2  5], and another 3x3 matrix, B, with first row [6  2  -1], second row [3  5  2] and third row [-2  -3  0].

Q. 1 - The matrix 2A-5B is:

A. First row [-3 -2 -5], second row [-1 -1 -8] and third row [2 1 0]
B. First row [2 -4 0], second row [5 7 -2] and third row [1 1 0]
C. First row [-32 -4 9], second row [-15 -17 -8] and third row [12 19 10]
D. First row [11 -3 5], second row [-1 6 -7] and third row [1 0 -2]

Q . 2 - A^2 - 2A + 3I is:

a. First row [8 7 -3], second row [1 13 7] and third row [2 17 22]
b. First row [-1 7 -3], second row [0 1 -5] and third row [4 1 25]
c. First row [8 1 0], second row [1 1 0] and third row [0 -7 22]
d. First row [-7 5 -3], second row [1 18 15] and third row [-2 11 12]

 Q. 3 - The matrix AB is:

A. First row [0 7 -7], second row [1 4 7] and third row [2 -1 3]
B. First row [-1 7 7], second row [10 17 8] and third row [2 -3 3]
C. First row [-1 0 1], second row [0 1 -8] and third row [-4 -3 3]
D. First row [4 0 1], second row [1 1 8] and third row [2 -3 3]

Q. 4 - The matrix BA is:

A. First row [0 7 -7], second row [1 4 7] and third row [2 -1 3
B. First row [-1 7 7], second row [10 17 8] and third row [2 -3 3]
C. First row [-7 24 9], second row [-1 33 21] and third row [2 -18 -7]
D. First row [-5 26 5], second row [-1 3 2] and third row [0 -18 -5]

Q. 5 - The matrix A transpose is:

A. First row [-1 3 2], second row [0 4 1] and third row [1 2 5]

B. First row [1 0 1], second row [0 1 0] and third row [0 0 1]

C. First row [1 0 1], second row [0 -3 5] and third row [2 4 -5]
D. First row [-1 0 1], second row [3 4 2] and third row [2 1 5