Question: 1. Identify the elementary row operation that each elementary matrix represents. 1 0 5 (a) (2 marks) E = 0 l 0 0 0 1

1. Identify the elementary row operation that each elementary matrix represents. 1 0 5 (a) (2 marks) E = 0 l 0 0 0 1 0 0 1 (b) (2 marks) E = 0 1 0 l 0 0 l 0 0 (e) (2 marks) E = 0 n 0 0 0 1 2. (10 marks) Use the matrix inversion algorithm to find the inverse of A = WAN (continued)3. Find the area of parallelogram ABCD, whose vertices are A = (1, 1), B = (-4,5), C= (-1,7), and D = (4,3). (8 marks) Its area is unit. The End

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