MathDB
inequality

Source:

January 31, 2016
inequalitieseasy inequalityeasy

Problem Statement

Let x,y,zx,y,z be real numbers such that, xyz>0x \geq y \geq z >0. Prove that x2y2z+z2y2x+x2z2y3x4y+z\frac{x^2-y^2}{z}+\frac{z^2-y^2}{x}+\frac{x^2-z^2}{y} \geq 3x-4y+z