Q1: (8+17 Marks) (a) If A-[ a ] is a 3x3 matrix; such that a = i (4-2), find the values of diagonal elements and the value of 2013+ al (b) 1 20 If D= 3 -6 1 C: third coulum of D and I: unit matrix 1-2 0 5 Find (i) K if CT D' C = 10K (ii) a and b if adj (D) = a D² + bl

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