Question:
If $S_{1}$ and $S_{2}$ are respectively the sets of local minimum and local maximum points of the function, $f(\mathrm{x})=9 \mathrm{x}^{4}+12 \mathrm{x}^{3}-36 \mathrm{x}^{2}+25, \mathrm{x} \in \mathrm{R}$, then :
Correct Option: 1
Solution:
