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Question
`If A = [(1, -2 ,1), (2,1,3)] and B= [(2,1),(3,2),(1,1)]`;
Write down the product matrix AB.
Solution
` AB = [(1, -2 ,1), (2,1,3)] [(2,1),(3,2),(1,1)]`;
`=[(2,-6,+1,1,-4,+1),(4,+3,+3,2,+2,+3)]`
`=[(-3, -2),(10, 7)]`
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