Mathematics · 2019
JEE Main · 8 April 2019, Shift 1 · Q73
If S_1 and S_2 are respectively the sets of local minimum and local maximum points of the function, f(x)=9 x^4+12 x^3-36 x^2+25, x ∈ R, then:
If $\displaystyle \mathrm{S}_1$ and $\displaystyle \mathrm{S}_2$ are respectively the sets of local minimum and local maximum points of the function, $\displaystyle f(x)=9 x^4+12 x^3-36 x^2+25, x \in \mathbf{R}$, then :
Official answer
(2)
$\displaystyle S_1=\{-2,1\} ; S_2=\{0\}$
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JEE Main 2019 Mathematics question, with the answer from NTA’s final answer key. Where our answers come from.