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

\(\lambda\) तथा \(\mu\) के क्रमश: मान, जिनके लिए समीकरण निकाय \(x+y+z=2\), \(x+2 y+3 z=5\), \(x+3 y+\lambda z=\mu\) के असंख्य हल हैं

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

Answer & Solution

Correct Answer

(D) \(5\) तथा  \(8\)

Step-by-step Solution

Detailed explanation

For infinite many solutions \(D=D_{1}=D_{2}=D_{3}=0\) \(\operatorname{Now} D =\left|\begin{array}{lll}1 & 1 & 1 \\ 1 & 2 & 3 \\ 1 & 3 & \lambda\end{array}\right|=0\) \(1 .(2 \lambda-9)-1 .(\lambda-3)+1 .(3-2)=0\) \(\therefore \lambda=5\)…
Same subject
Explore more questions on app
From JEE Mains
Explore more questions on app