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1 2 1 1. (4 MARKS) Let A = and B Find AB _ (B_1A_1)_1. 4 3 0 1 0 0 0 1 2 1

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1 2 1 1. (4 MARKS) Let A = and B Find AB _ (B_1A_1)_1. 4 3 0 1 0 0 0 1 2 1 (a) (b) 0 (c) (e) None of these 0 0 (d) 1 4 3 2 0 a b C d e 101 2. (4 MARKS) Find the inverse of the following matrix A = 2 10 3 0 2 101 1 2 3 0 (a) A-1 = 2 0 (b) A-1 = 0 1 0 (c) A-1 = 1 30 2 0 2 3 0 2 0 (d) A-1 = -4 2 (e) None of these 3 0 1 a b C d e

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