A) \[f'(x)=0\]and it is sufficient
B) \[f''(x)=0\]and it is sufficient
C) \[f'(x)=0\]but it is not sufficient
D) \[f'(x)=0\]and \[f''(x)=-ve\]
Correct Answer: C
Solution :
The necessary condition to be maximum or minimum for function \[{f}'(x)=0\] and for maximum \[{f}''(x)=-ve\] and for minimum \[{f}''(x)=+ve\]. Hence \[f'(x)=0\], but it is not sufficient.You need to login to perform this action.
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