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Application Of Derivatives

JEE Main 2024 (Online) 1st February Morning Shift

MCQ+4 / -12024
If $5 f(x)+4 f\left(\frac{1}{x}\right)=x^2-2, \forall x \neq 0$ and $y=9 x^2 f(x)$, then $y$ is strictly increasing in :

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