SOLUTION: perform the matrix row operations and write the new matrix |2 -4 1 | 4 | |-5 0 1 | -3 | -3R1+R2 |-1 5 -2 | -1 |

Algebra ->  Algebra  -> Matrices-and-determiminant -> SOLUTION: perform the matrix row operations and write the new matrix |2 -4 1 | 4 | |-5 0 1 | -3 | -3R1+R2 |-1 5 -2 | -1 |      Log On

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 Click here to see ALL problems on Matrices-and-determiminant 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 |