Re: ISI Sample Paper PEA 2016 Discussion

Posted by Dr. Strange on Apr 12, 2016; 3:12pm
URL: http://discussion-forum.276.s1.nabble.com/ISI-Sample-Paper-PEA-2016-Discussion-tp7599761p7599799.html

Are you implying this because of the equality sign present?
Since it is mentioned that function is twice differentiable I have doubt whether this means higher derivatives don't exist or are equal to 0. In second case second derivative must be nonzero where first derivative is 0 and it will be necessary and sufficient condition.However if third or higher derivatives exist then it will only be a necessary condition as the point can be inflection point. My doubt lies on meaning of twice differentiable.