Desigualdad, Olimpiada Hondureña
Si xyzt=1; x,y,z,t son todos reales. Demostrar que:
(x^5+y^3)/(y+z+t) + (y^5+z^3)/(z+t+x) + (z^5+t^3)/(t+x+y) + (t^5+x^3)/(x+y+z) >= 8/3
(x^5+y^3)/(y+z+t) + (y^5+z^3)/(z+t+x) + (z^5+t^3)/(t+x+y) + (t^5+x^3)/(x+y+z) >= 8/3
Respuesta de Valero Angel Serrano Mercadal
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