Practicing Success
If $A$ and $B$ are two matrices of order $4 \times m$ and $4 \times n$, respectively and $m=n$ then the order of matrix $(5 A-2 B)$ is : |
$4 \times m$ $4 \times 4$ $3 \times 3$ $m \times 4$ |
$4 \times m$ |
given m = n A → order 4 × m B → order 4 × n for addition of two matrix / subtraction their orders must be same So order (SA - ZB) = 4 × m |