Question: 'I. Let E denote the 3 X 3 elementary matrix that corresponds to R3 + 2R1 % R3 . Find E9. Answer: E9 =8 2.

'I. Let E denote the 3 X 3 elementary matrix that corresponds to R3 + 2R1 % R3 . Find E9. Answer: E9 =8 2. Let F denote the 3 x 3 elementary matrix that corresponds to R2 (> R3 . Find F21. Answer: F 21 =8 3. Let G denote the 3 X 3 elementary matrix that corresponds to 3R2 > R2 . Find G8. Answer: G'8 =8

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