हिंदी

If A = [025-2], B = [1-132] and I is a unit matrix of order 2 × 2, find BA - Mathematics

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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 BA

योग
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उत्तर

BA = `[(1, -1),(3, 2)][(0, 2),(5, -2)]`

= `[(1 xx 0 + (-1)(5), 1 xx 2 + (-1)(-2)),(3 xx 0 + 2 xx 5, 3 xx 2 + 2(-2))]`

= `[(0 - 5, 2 + 2),(0 + 10, 6  - 4)]`

= `[(-5, 4),(10, 2)]`

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