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Question
If A = `[(0, 2),(5, -2)]`, B =` [(1, -1),(3, 2)]` and I is a unit matrix of order 2 × 2, find AI
Sum
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Solution
AI = `[(0, 2),(5, -2)][(1, 0),(0, 1)]`
= `[(0 xx 1 + 2 xx 0, 0 xx 0 + 2 xx 1),(5 xx 1 + (-2) xx 0, 5 xx 0 + (-2) xx 1)]`
= `[(0 + 0, 0 + 2),(5 + 0, 0 - 2)]`
= `[(0, 2),(5, -2)]`
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Chapter 9: Matrices - Exercise 9 (C) [Page 129]
