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 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 …

Concave (inward-curved) lenses are the opposite of convex lenses, so there is a pre-existing word for "not convex" or "convex in the opposite direction". Convex has an absolutely entrenched …

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 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 …

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 …

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 …

Oct 4, 2016 · A convex set is convex in the dictionary sense, seen from the outside. I then think of a convex function as more of a definitional by-product of the convex set, so it is not the look of …

Jan 15, 2019 · So, is this function convex, concave up or quasi-concave? I understand that something that's concave or convex can also be quasi-concave -- but what is the difference …

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 ...