Augmented matrix problem?

 Given the augmented matrix

A=[1 1 2 5 2 3 −6 6 −4 −8 2 6 ]

,

perform each row operation in the order specified and enter the final result. 

First: −2R1+R2→R2

Second: 4R1+R3→R3

Third: 4R2+R3→R3

1 Answer

Relevance
  • 6 months ago

    1 1 2 5 

    2 3 −6 6

     −4 −8 2 6

    -2 -2 -4 -10

    2   3 -6  6 gives new row two 0 1 -10 -4

    4  4  8 20

    -4 -8 2 6 gives new row three 0 -4 10 26 so now

    1 1   2  5 

    0 1 -10 -4

    0 -4 10 26 then

    0 4 -40 16

    gives new row three 0 0 -30 42

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