Question

If X, Y, Z, Wand P are matrices of order 2 × n, 3 × k, 2 × P and P × K respectively. if n = P, then the order of the matrix 7x – 5z is

विकल्प

• P × 2

• 2 × n

• n × 3

• P × n

Answer 1

2 × n

Explanation:

The order of matrix 'X' is 2 × n.

As a result, matrix 7x is also of the same order.

The order of matrix Z is 2 × P.

As a result, matrix 5z is also of the same order.

Both matries 7x and 5z are now of the order 2 × n. As a result, matrix 7x – 5z is well defined and of order 2 × n.