Question
X, Z are matrices of order 2 x 2 X p respectively.
If n = p, then the order of the matrix 7X – 5Z is :
-
p x 2
-
2 x n
- n x 3
- p x n
Solution
B.
2 x n
X, Z are matrices of order 2 X n, 2 X p respectively. Also n = p. So X, Z are matrices of the same type 2 X n
∴ 7X - 5Z is defined and of type 2 X
∴ (B) is correct answer.
