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Say if it is true or false and explain why a if a matrix A has...

Say if it is true or false and explain why

a if a matrix A has row echelon form shown below, then dim(row(A))= 2

the matrix:

[1 0 0 ]^t [1 1 0 ]^t [-2 8/3 0 ]^t [4 -10/3 0 ]^t

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