Question

Determine if the matrix is in row-echelon form. 1 -7 -7 1 3 0 1 0 -3 0 0 2 -1 O A) Yes OB) No

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Answer #1

Yes, because all rows consisting of zeros are at the bottom.

The leading coefficient of nonzero row is always strictly to the right of leading coefficient of the row above it.

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