18 Dec 2020 Question of the Day By Maths Grinds /Posted Bystephen/Comments0 Prove $f(x)$ is constant if $|f(x)-f(y)| < (x-y)^2$ for all real $x$ and $y$. https://mathsgrinds.ie/wp-content/uploads/2020/12/2020-12-12_21-56-40.mp4
