IMO Longlist 1989 Inequality
Source: IMO Longlist 1989, Problem 92
September 18, 2008
inequalitiesinequalities unsolved
Problem Statement
Prove that implies that a^3 \minus{} 3a \leq b^3 \minus{} 3b \plus{} 4. When does equality occur?
Source: IMO Longlist 1989, Problem 92