Class CBSE Class 12 Mathematics Matrices and Determinants Q #1832
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5 Marks 2026 AISSCE(Board Exam) LA
If $\begin{bmatrix} 3 & -1 & \sin 3x \\ -7 & 4 & \cos 2x \\ -11 & 7 & 2 \end{bmatrix}$ is a singular matrix, then find all values of $x$
where $x \in \left[0, \frac{\pi}{2}\right]$.
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