Answer:
f(x)=x3=6x2+12x−8
f(x)=3(x2−4x+4)
f(x)=3(x−2)2
f(x)=0 ⇒ x=2
But clearly f(x) does not change sigh about x=2. f(2)<0 and f(2)<0.So f(x) has no point of maxima or minima . In fact f(x) is a monotonically increasing function for x∈R
Step-by-step explanation:
