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प्रश्न
If P = `|(2 , 9),(5 , 7)|` and Q = `|(7 , 3),(4 , 1)|` , find 2P + 3Q
उत्तर
`= |(2 , 9),(5 , 7)|_(2 xx 2)` , Q = `|(7 , 3),(4 , 1)|_(2 xx 2)`
2P + 3Q = `|(4 , 18),(10 , 14)| + |(21 , 9),(12 , 3)|`
`= |(4 + 21 , 18 + 9),(10 + 12 , 14 + 3)| = |(25 , 27),(22 , 17)|_(2 xx 2)`
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