Question of the week - #1

ok, so here we have the answer to last week's question on the continuity of the derivative function at a given point ...

Enjoy !!

ok, so here we have the answer to last week's question on the continuity of the derivative function at a given point ...

**The answer is in general negative! A function may be differentiable at a point of its domain, with the derivative being discontinuous at that point!**Here is a**counterexample**. you can provide a proof on your own by directly applying the definition of the derivative at $x=0$, but if you find the computation cumbersome, here are some more details ;)Enjoy !!

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