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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 AB
उत्तर
AB = `[(0, 2),(5, -2)][(1, -1),(3, 2)]`
= `[(0 xx 1 + 2 xx 3, 0 xx (-1) + 2 xx 2),(5 xx 1 + (-2) xx 3, 5 xx (-1) + (-2) xx 2)]`
= `[(0 + 6, 0 + 4), (5 - 6, -5 - 4)]`
= `[(6, 4),(-1, -9)]`
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