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Matrices and Determinants question

2024 · 4 Apr · Shift 1 · Q33
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Matrices and Determinants question

2024 · 4 Apr · Shift 1 · Q33

JEE MainMathematicsMatrices and DeterminantsMCQ+4 / −1
Let α∈(0,∞)\alpha \in(0, \infty)α∈(0,∞) and A=[12α101012]A=\left[\begin{array}{lll}1 & 2 & \alpha \\ 1 & 0 & 1 \\ 0 & 1 & 2\end{array}\right]A=​110​201​α12​​. If det⁡(adj⁡(2A−AT)⋅adj⁡(A−2AT))=28\operatorname{det}\left(\operatorname{adj}\left(2 A-A^T\right) \cdot \operatorname{adj}\left(A-2 A^T\right)\right)=2^8det(adj(2A−AT)⋅adj(A−2AT))=28, then (det⁡(A))2(\operatorname{det}(A))^2(det(A))2 is equal to:
  1. A
    16
  2. B
    36
  3. C
    49
  4. D
    1
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