For full marks, show all working. 1. Let 4 1 N A = 2 -1 and B = CO - 1 W N 2 O
For full marks, show all working. 1. Let 4 1 N A = 2 -1 and B = CO - 1 W N 2 O 2 Let a denotes the ith row and a; the jth column of A, and b' denotes the ith row and bi the jth column of B. Write down (a) as, the third row of A (b) b2, the second column of B (c) a2b2 (d) the second column of AB. (e) Calculate Ek (3kbk2 and Ek alkbk3. (1+1+2+3+3=10 marks)
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