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OpenStudy (thomas5267):
Need help on understand a proof of the uniqueness of reduced row echelon form. http://web.gccaz.edu/~wkehowsk/225-Linear-10-11-Sp/yuster-rref-unique.pdf
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OpenStudy (thomas5267):
The part I don't understand is: "Thus by induction, if B and C are reduced row echelon forms of A, they can differ in the nth column only"
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