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Question 1084449: i need help with this Matrix
1 5 |
2 6 | x 1/2 R2 into R2
so I need to multiply the matrix by 1/2 of row 2 and put it into row 2
I've done it and think it looks like this but I am not sure
1 5
1 3
Answer by rothauserc(4718)   (Show Source):
You can put this solution on YOUR website! 1 5
2 6
:
this is a 2 by 2 matrix, that is 2 rows by 2 columns
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(1/2) * R2 = (1, 3)
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this is a 1 by 2 matrix, that is, 1 row by 2 columns
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it is not possible to multiply these two matrices
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for this to work (1,3) would have to be 2 rows by 1 column
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if I assume this is what you mean, then
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1 5
2 6
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multiplied by (1,3) is (1+15, 2+18) = (16, 20)
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then your matrix becomes
:
1 5
16 20
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