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Question
If Δ = `|(1, 2, 3),(2, -1, 0),(3, 4, 5)|`, then `|(1, 6, 3),(4, -6, 0),(3, 12, 5)|` is
Options
2Δ
3Δ
6Δ
0
MCQ
Solution
6Δ
Explanation:
`|(1, 6, 3),(4, -6, 0),(3, 12, 5)| = 3|(1, 2, 3),(4, -2, 0),(3, 4, 5)|` = 3.2
`|(1, 2, 3),(2, -1, 0),(3, 4, 5)|` = 6Δ
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Application of Determinants - Area of a Triangle Using Determinants
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