- #1
mathmathmad
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Homework Statement
[PLAIN]http://img260.imageshack.us/img260/727/picture2mg.png
just wondering.. isn't the the matrix on the 1st line already in its reduced row echelon form?
why is another row operation required to obtain the matrix on the 2nd line? (notice the changes to the matrix on the right)
Homework Equations
The Attempt at a Solution
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