Question: In each part use the given equation to determine the elementary matrix E, and give its inverse E'l. 2 E 1 2 0 : 1

In each part use the given equation to determine the elementary matrix E, and give its inverse E'l. 2 E 1 2 0 : 1 2 0 0 1 1 3 7 Answer: E=D,and E'1= 4 1 2 4 1 2 3 E 0 1 1 : 0 1 1 2 1 3 10 5 15 Answer E: ,and E'1= 8 5 9 2 2 73 1 E 2 1 4 : 2 1 4 6 8 7 6 8 7

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