[112] 1. Let A = B=10 013 2 3 ' [1 0 1 C = 1...

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[112] 1. Let A = B=10 013 2 3 ' [1 0 1 C = 1 -12 -2 1 3 Determine whether each of the following expressions is defined. If so, simplify the expression into a single matrix. If not, explain why it is not defined. (a). (A+B)C (10 marks) (b). AC-(3B) (10 marks) (c). ACB+(BT)B (10 marks) (d). AB-BA (10 marks) [112] 1. Let A = B=10 013 2 3 ' [1 0 1 C = 1 -12 -2 1 3 Determine whether each of the following expressions is defined. If so, simplify the expression into a single matrix. If not, explain why it is not defined. (a). (A+B)C (10 marks) (b). AC-(3B) (10 marks) (c). ACB+(BT)B (10 marks) (d). AB-BA (10 marks)