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14 Which of the following statements are always true i The set of nonzero rows...

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14 Which of the following statements are always true i The set of nonzero rows of a matrix A is a basis for the row space of A ii If R is the reduced row echelon form of A then the columns of R with leading I s forms basis for the column space of A iii If E is an elementary matrix then the matrices A and EA have the same row space a all of them b none of them e i and ii only d iii only e i and iii only

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