Question: By trial and error, find two 2 2 matrices A and B such that AB = BA. Similarly, find two matrices C and D (whose

By trial and error, find two 2 2 matrices A and B such that AB = BA. Similarly, find two matrices C and D (whose sizes you should choose appropriately), such that the product CD exists, but the product DC does not exist. In general matrix multiplication is not commutative, i.e., changing the order of multiplication may make the multiplication impossible, and even if it is possible, it may yield a different product

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