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14. Determine elementary matrices E1, E2, ..., Ex that reduce 2 A = 3 to reduced row-echelon form. Verify by direct multi- plication that E

14. Determine elementary matrices E1, E2, ..., Ex that reduce 2 A = 3 to reduced row-echelon form. Verify by direct multi- plication that E E2 . . . E A = 12

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