A) increases everywhere
B) decrease in \[(0,\infty )\]
C) increases is \[(0,\infty )\]
D) None of the above
Correct Answer: B
Solution :
Given, \[f(x)=1-{{x}^{3}}\] \[f'(x)=-2{{x}^{2}}<0,\,\,\forall \,\,x\in R\] So, \[f(x)\] is decreases in \[(0,\infty )\].
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