Question is if f(x) is a differentiable function. If f'(c)=0 then f(x) has a local maximum or minimum at x=c. True of False?
I would have thought this was true but answer in text states otherwise.
Could someone clarify and explain please.
Thanks
Question is if f(x) is a differentiable function. If f'(c)=0 then f(x) has a local maximum or minimum at x=c. True of False?
I would have thought this was true but answer in text states otherwise.
Could someone clarify and explain please.
Thanks