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Question
If A = `[(1, -2),(3, 0)], B = [(0, -2),(2, 1)]` find BA.
Sum
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Solution
A = `[(1, -2),(3, 0)], B = [(0, -2),(2, 1)]`
BA = `[(0, -2),(2, 1)] [(1, -2),(3, 0)]`
= `[(0 xx 1 + (-2) xx 3, 0 xx (-2) + (-2) xx 0),(2 xx 1 + 1 xx 3, 2 xx (-2) + 1 xx 0)]`
= `[(-6, 0),(5, -4)]`
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Chapter 8: Matrices - Exercise 8C [Page 164]
