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  • 學位論文

有關一些更細緻的 Hadamard 不等式

SOME refinements of Hadamard Inequality

指導教授 : 楊國勝

摘要


如果 f : I → ℝ 為I中的凸函數,則 f( (a+b)/2)≤1/(b-a ) ∫_a^b▒〖f(x)dx ≤ 1/(2 ) [f(a)+f(b)] 〗 (1.1) 恆成立,為眾所週知的Hermite-Hadamard不等式 如果 f為I中的凸函數,是否存在實數 l及L 滿足下列不等式: f((a+b)/2)≤ l ≤1/(b-a ) ∫_a^b▒〖f(x)dx ≤L ≤ 1/(2 ) [f(a)+f(b)] 〗 (1.2) 本論文研究的主要目的是為了提供這問題 (1.2) 更多的一些答案

並列摘要


If f : I → ℝ is convex on I, then f( (a+b)/2)≤1/(b-a ) ∫_a^b▒〖f(x)dx ≤ 1/(2 ) [f(a)+f(b)] 〗 (1.1) This is the classical Hermite-Hadamard inequality If f is a convex function on I , do there exist real numbers l , L such that f((a+b)/2)≤ l ≤1/(b-a ) ∫_a^b▒〖f(x)dx ≤L ≤ 1/(2 ) [f(a)+f(b)] 〗 (1.2) The main purpose of this paper is to give some answers to the question (1.2)

參考文獻


http://rgmia.vu.edu.au/mmonographs/Hermite-hadamard.html Victoria University;2000
[3] A,EL FARISSI, Simple proof and refinement of Hermite-Hadamard inequality J, Math Iueg, Vol.4, NO3 (2010)365-369
[5] D,S,MI.TRINOVIC and I.B, LACKOVIC, Hermite and convexity, Aequations Math ,28(1985)229-232
[1] S.S. DRAGOMIR AND C.E.M. PEARCE, Selected Topics on Hermite –Hadamard Inegualities , CRGMIA Monographs
[2] A.EL FARISSI,2,LATREVCH,B.BELAIDI, Hadamard-Type Inqualities for twice. Differentiable Functions, RGMIA RESEARCH, Report Collection, 12,1(2009), Art,6.

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