For how many value(s) of x in the closed interval [-4,-1] , is the matrix [ array ccc 3 &…
Mathematics · JEE Main · NTA Exams — Matrices and Determinants
For how many value(s) of x in the closed interval \([-4,-1]\), is the matrix \(\left[\begin{array}{ccc}
3 & -1+\mathbf{x} & 2 \\
3 & -1 & \mathbf{x}+2 \\
\mathbf{x}+\mathbf{3} & -1 & 2
\end{array}\right]\) singular ?
- 2
- 0
- 3
- 1
Answer
(A) 2
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