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Question 58565: perform the matrix row operations and write the new matrix
|2 -4 1 | 4 |
|-5 0 1 | -3 | -3R1+R2
|-1 5 -2 | -1 |
Answer by venugopalramana(3286)   (Show Source):
You can put this solution on YOUR website! perform the matrix row operations and write the new matrix
|2 -4 1 | 4 |
|-5 0 1 | -3 | -3R1+R2
|-1 5 -2 | -1 |
this means replace the present row no.2 with the existing row no.2 minus
3 times the existing row no.1.rows 1 and 3 remain as they are now.
so we get
-5-3*2=-11 instead of -5
0-3*(-4)=12 instead of 0
1-3*1=-2 instead of 1
-3-3*4=-15 instead of -3....to get
|2,-4,1, |4 |
|-11,12,-2, |-15 |
|-1,5,-2, |-1 |
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