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JEE Main 2019 Mathematics question

MathematicsDeterminantsJEE Main 2019

Let d ∈ R, and , θ ∈ [0, 2π]. If the minimum value of det(A) is 8, then a value of d is:

Answer: (C)

Solution

det A = , minimum ⇒ d = 1

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Question ID VK-010735