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Let f (x) = 4 ) 2 x ( 3 2 3 + − , x ∈ R . Then which of the following statements are true ? P : x = 0 is a point of local minima of f Q : x = 2 is a point of inflection of f R : f ′ is increasing for x > 2

1. Only P and Q
2. Only P and R
3. Only Q and R
4. All, P, Q and R

Correct answer: All, P, Q and R

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