If you know the standard English meaning of the words convex and concave, you can remember that for a convex function it is the epigraph that is convex, and for a concave function it is the …

Dec 23, 2018 · I prefer convex. feels much more comfortable on the thumb and allows for better fine tuning in things like racing games. concave are better for quick reactions like in shooters …

The epigraph of a convex $\mathbb {R} \to \mathbb {R}$ function is a convex set within ``graph space'' $ (x,y)$ although this doesn't explain why we should look at the epigraph instead of the …

Nov 1, 2017 · What's the intuitive difference between quasi-concavity and concavity? Can you give an example of a quasi-concave function that is not concave?

Dec 18, 2013 · I was wondering if linear function is convex or concave? For example f(x)=x, is function whose second derivate is 0 so we cant tell anything using this criteria. Can someone …

May 14, 2018 · So, is there a way to distinguish convexity and strict convexity just by visual inspection of the graph of a function? And, if so, how? What can be the specific characteristic …

Aug 10, 2017 · How can I test the function for three variables if it is convex or concave Consider $$f(x,y,z)=xz-xyz$$ whete x,y and z $\\in (- \\infty,\\infty) $ A function ƒ is ...

May 20, 2017 · I was doing this question and it quoted that "Given that the region OCB is convex..." but surely that region is concave as a basic way is that a line between two points …

Aug 24, 2022 · My question is, if we take a concave function like the picture below, and take the negative of it, will it become convex? Since the appearance will be U-shaped just like a convex …

Mar 27, 2017 · Are all quadratic functions convex and vice versa or are quadratic functions just one type of convex function? If so, could someone please provide examples of functions that …