JEE Mains · Maths · STD 12 - 3 and 4 . metrices and determinant
If the system of equations \(x + y+ z = 5\) ; \(x + 2y + 3z = 9\) ; \(x + 3y + \alpha z = \beta \) has infinitely many solutions, then \(\beta - \alpha \) equals
- A \(21\)
- B \(8\)
- C \(18\)
- D \(5\)
Answer & Solution
Correct Answer
(B) \(8\)
Step-by-step Solution
Detailed explanation
\(x + y - z = 5\) \(x + 2y + 3z = 9,\) \(x + 3y + \alpha z = \beta \)…
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