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प्रश्न
If matrix A = `[(-1, 2)]` and matrix B = `[(3),(4)]`, then matrix AB is equal to ______.
पर्याय
[–3]
[8]
[5]
`[(-1, 2),(3, 4)]`
MCQ
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उत्तर
If matrix A = `[(-1, 2)]` and matrix B = `[(3),(4)]`, then matrix AB is equal to [5].
Explanation:
AB = `[(-1, 2)] [(3),(4)]`
= [–1 × 3 + 2 × 4]
= [–3 + 8]
= [5]
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