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- Jan 26, 2012

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Here is a link to the question:Dominika said:Let $f$ be differentiable on the interval $(a,b)$. Show that $f$ is convex on $(a,b)$ if and only if, for every $c$ from $(a,b)$ its graph is placed above or on the tangent passing through a point $(c,f(c))$

Thanks a lot..

Convex function .....? - Yahoo Answers

I have posted a link there to this topic so the OP can find my response.