Authors: Jesús Álvarez Lobo
Solution to the problem PMO33.5. Problema del Duelo Matemático 08 (Olomouc – Chorzow - Graz). Let a, b, c in ℝ. Prove that V = 4(a² + b² + c² ) - (a + b)² - (b + c)² - (c + a)² >= 0, and determine all values of a, b, c for which V = 0.
Comments: 3 Pages. Spanish.
[v1] 2018-02-08 06:48:35
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