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JEE Mains · Maths · STD 12 - 3 and 4 . metrices and determinant

\(\lambda\) અને \(\mu\) ની અનુક્રમે ............. કિમતો માટે સુરેખ સમીકરણ સંહિતા  \(x+y+z=2\) \(x+2 y+3 z=5\) \(x+3 y+\lambda z=\mu\) ને અનંત ઉકેલો મળે 

  1. A \(5\) અને \(7\)
  2. B \(6\) અને \(8\)
  3. C \(4\) અને \(9\)
  4. D \(5\) અને \(8\)
Verified Solution

Answer & Solution

Correct Answer

(D) \(5\) અને \(8\)

Step-by-step Solution

Detailed explanation

For infinite many solutions \(D=D_{1}=D_{2}=D_{3}=0\) \(\operatorname{Now} D =\left|\begin{array}{lll}1 & 1 & 1 \\ 1 & 2 & 3 \\ 1 & 3 & \lambda\end{array}\right|=0\) \(1 .(2 \lambda-9)-1 .(\lambda-3)+1 .(3-2)=0\) \(\therefore \lambda=5\)…
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