Are the following statements true or false?
If A and B have the same RREF then N(A) = N(B).
If B is a row-echelon form of a matrix A, then the nonzero rows of B form a basis for the row space of A.
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If A is row equivalent to B, then the row spaces of A and B are equal.
The nonzero rows of the row echelon form of an matrix A form a basis of the row space of A. This is so since the nonzero rows of the row echelon form are linearly independent.
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