
doi: 10.1155/2012/425175
We find the greatest valueαand the least valueβin (1/2, 1) such that the double inequalityC(αa+ (1 −α)b,αb+ (1 −α)a) <T(a,b) <C(βa+ (1 −β)b,βb+ (1 −β)a) holds for alla,b> 0 witha≠b. Here,T(a,b) = (a−b)/[2 arctan((a−b)/(a+b))] andC(a,b) = (a2+b2)/(a+b) are the Seiffert and contraharmonic means ofaandb, respectively.
convex combination, QA1-939, Inequalities involving other types of functions, Mathematics, Means
convex combination, QA1-939, Inequalities involving other types of functions, Mathematics, Means
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