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Question
Choose correct alternative for the following question.
To solve x + y = 3; 3x – 2y – 4 = 0 by determinant method find D.
Options
5
1
−5
−1
Solution
x + y = 3
3x – 2y – 4 = 0
∴ 3x – 2y = 4
`"D" = |(1, 1), (3, -2)| = 1 × (-2) – 1 × 3 = – 2 – 3 = – 5`
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