(Solved):
(3) A function f: (a, b) R is convex if f(x + (1 - A)y) \(x) + (1 x)f(y) (Vx, y ...
(3) A function f: (a, b) ? R is convex if f(x + (1 - A)y) ? \ƒ(x) + (1 ? x)f(y) (Vx, y ? (a, b), VA € (0,1)) Provide an example of a convex function on R that is not of the form f(x) = rx+s for real numbers r and s. Also, prove that any nondecreasing convex function on any open interval (a, b) is continuous.