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प्रश्न
If A = [4 7] and B = [3 l], find: A - B
उत्तर
A = `[(4 , 7)]_(1 xx 2)` B = `[(3 , 1)]_(1 xx 2)`
A - B = `[(4-3 , 7-1)]`
= `|(1 , 6)|_(1 xx 2)`
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