Multiplication of Matrices

• Apr 8th 2010, 08:14 PM
brumby_3
Multiplication of Matrices
Assuming that R and A are two matrixes, for 5R-2A

you times matrix R by 5 and matrix A by 2, and then do the subtraction, right?
• Apr 8th 2010, 08:36 PM
harish21
Quote:

Originally Posted by brumby_3
Assuming that R and A are two matrixes, for 5R-2A

you times matrix R by 5 and matrix A by 2, and then do the subtraction, right?

Yes, but you should remember that both R and A should be of the same size. If R is $n \times n$, then A should also be $n \times n$, else subtraction wont be possible!