Question

2maths - if a and b are two matrices of order 3×m and 3×n resp and m=n, then find the order of 5a-3b ??

Answer 1

A3×m and B3×n are two matrices . If m = n, then A and B have same orders as 3×n each, so the order of (5A-2B) should be same as 3×n.