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Application Of Derivatives

JEE Main 2021 (Online) 25th July Morning Shift

MCQ+4 / -12021
Let \(f(x) = 3{\sin ^4}x + 10{\sin ^3}x + 6{\sin ^2}x - 3\), \(x \in \left[ { - {\pi \over 6},{\pi \over 2}} \right]\). Then, f is :

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