Elementary matrix is constructed out of identity for gaussian elimination, it's easier to see it on an example:(adsbygoogle = window.adsbygoogle || []).push({});

if A =

1 2 3

4 5 6

7 8 9

and E

1 0 0

-4 1 0

0 0 1

then EA =

1 2 3

0 -3 -6

7 8 9

so now the problem asks how are rows of EM related to the rows of M if E is

1 1 1

0 0 0

where M is arbitrary any matrix.

thank you in advance.

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# Elementary matrix

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