# Difference between revisions of "2006 IMO Problems/Problem 3"

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==Problem== | ==Problem== | ||

− | Determine the least real number <math>M</math> such that the inequality < | + | Determine the least real number <math>M</math> such that the inequality <cmath> \left| ab\left(a^{2}-b^{2}\right)+bc\left(b^{2}-c^{2}\right)+ca\left(c^{2}-a^{2}\right)\right|\leq M\left(a^{2}+b^{2}+c^{2}\right)^{2} </cmath> holds for all real numbers <math>a,b</math> and <math>c</math> |

==Solution== | ==Solution== | ||

. | . |

## Latest revision as of 03:51, 19 July 2015

## Problem

Determine the least real number such that the inequality holds for all real numbers and

## Solution

.