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प्रश्न
If A = `[(0, 2),(5, -2)]`, B = `[(1, -1),(3, 2)]` and I is a unit matrix of order 2 × 2, find A2
उत्तर
A2 = `[(0, 2),(5, -2)][(0, 2),(5, -2)]`
= `[(0 xx 0 + 2 xx 5, 0 xx 2 + 2 xx -2),(5 xx 0 + (-2) xx 5, 5 xx 2 + (-2) xx (-2))]`
= `[(0 + 10, 0 - 4), (0 - 10, 10+ 4)]`
= `[(10, -4),(-10, 14)]`
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