Let \( f(x)=3^{(x^2-2)^3+4}, \; x \in R \). Then which of the following statements are true? \( P:\; x=0 \) is a point of local minima of \( f \) \( Q:\; x=\sqrt{2} \) is a point of inflection of \( f \) \( R:\; f' \) is increasing for \( x>\sqrt{2} \)
