MathDB
Least value(very easy)

Source: my notes

January 4, 2005
inequalitiesinequalities proposed

Problem Statement

For a,b,ca,b,c positive reals find the minimum value of a2+b2c2+ab+b2+c2a2+bc+c2+a2b2+ca. \frac{a^2+b^2}{c^2+ab}+\frac{b^2+c^2}{a^2+bc}+\frac{c^2+a^2}{b^2+ca}.