3. Consider the following matrices. If AB = BA, and AC = CA, prove that a = d, and b=c=0, and that A is a multiple of 12
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3. Consider the following matrices. If AB = BA, and AC = CA, prove that a = d, and b=c=0, and that A is a multiple of 12
3. Consider the following matrices. If AB = BA, and AC = CA, prove that a = d, and b=c=0, and that A is a multiple of 12. [3 marks] a A= [ca B= [10 C= = [0] с d
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