TRUE/FALSE
To subtract two matrices, you subtract their corresponding elements.
TRUE
ADD A = [2 3] B = [5 2]
[1 4] [3 1]
A + B = [7 5]
[4 5]
Matrix addition and subtraction are both:
A. Commutative and associative
B. Only commutative
C. Only associative
D. Neither
A. Commutative and associative
Adding the identity matrix to any square matrix changes all of its elements.
FALSE
FIND X IF [5 4] + X = [8 9]
[3 2] [6 5]
[3 5]
[3 3]
What happens if you try to add a 2×3 matrix and a 3×2 matrix?
A. The result is a 2×2 matrix
B. The operation is not possible
C. You multiply instead
D. You add only the first row
B. The operation is not possible