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?
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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 , then A should also be , else subtraction wont be possible!
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