Let $ f $ be a twice differentiable function on $ (1,6) $. If $ f(2)=8, f^{\prime}(2)=5, f^{\prime}(x) \geq 1 $ and $ f^{\prime \prime}(x) \geq 4 $, for all $ x \in(1,6) $, then [JEE Main 2020, 4 Sep (Shift 1)]

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Let \( f \) be a twice differentiable function on \( (1,6) \). If \( f(2)=8, f^{\prime}(2)=5, f^{\prime}(x) \geq 1 \) an…

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