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प्रश्न
If A = [4 7] and B = [3 1] , find: A+2B
उत्तर
A = `[(4 , 7)]_(1 xx 2)` B = `[(3 , 1)]_(1 xx 2)`
A + 2B = `[4 , 7] + [6 , 2]`
= `[4 + 6 7 + 2]`
= `[(10 , 9)]_(1 xx 2)`
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