A) \[x<-3\]
B) \[|x|\,>3\]
C) \[x\le -3\]
D) \[|x|\,<3\]
Correct Answer: B
Solution :
To be increasing \[f'(x)=3{{x}^{2}}-27>0\] \[\Rightarrow {{x}^{2}}>9\]Þ \[|x|>3\].You need to login to perform this action.
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