WBJEE · Maths · Matrices
The solution of \(\operatorname{det}\left(A-\lambda I_2\right)=0\) be 4 and 8 and \(A=\left(\begin{array}{ll}2 & 3 \\ x & y\end{array}\right)\). Then
- A \(x=4, y=10\)
- B \(x=5, y=8\)
- C \(x=3, y=9\)
- D \(x=-4, y=10\)
Answer & Solution
Correct Answer
(D) \(x=-4, y=10\)
Step-by-step Solution
Detailed explanation
\(\operatorname{det}\left(A-\lambda I_2\right)=0 \Rightarrow\left|\begin{array}{cc}2-\lambda & 3 \\ x & y-\lambda\end{array}\right|=0\)…
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