Mathematics · 2017
JEE Main · 9 April 2017, Shift 1 · Q73
Let f be a polynomial function such that f(3 x)=f^′(x) · f^′ ′(x), for all x ∈ R. Then:
Let $\displaystyle f$ be a polynomial function such that $\displaystyle f(3 x)=f^{\prime}(x) \cdot f^{\prime \prime}(x)$, for all $\displaystyle x \in \mathbf{R}$. Then :
Official answer
(2)
$\displaystyle f^{\prime \prime}(2)-f^{\prime}(2)=0$
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JEE Main 2017 Mathematics question, with the answer from NTA’s final answer key. Where our answers come from.