... below).For information about publishing your research in Journal of Inequalities and Applications go tohttp://www.journalofinequalitiesandapplications.com/authors/instructions/For information ... (0, 1). Sincex ≤ max{x, y}, y ≤ max{x, y}; z ≥ max{x, y}, and F (u) is monotone increasing in u, we obtainQF(x, y) =F (x) + F(y)F (z)≤2F (max{x, y})F (max{x, y})= 2.The left-hand bound ... information about other SpringerOpen publications go tohttp://www.springeropen.comJournal of Inequalities and Applications© 2011 Simic and Vuorinen ; licensee Springer.This is an open access...