利用Hermite-Hadamard雙邊不等式。
    A.EL FARISSI提出了這樣的問題：若f是一個定義在[a,b]的凸函數，則是否存在有兩個實數l,L使得不等式成立
     
本論文主要研究目的是提供更多上述問題的答案，並針對所找出的l和L進行排序。

請參照紙本論文

Use the classic Hermite-Hadamard inequality.
If f is convex function on [a,b],do there exist real numbers l and L such that inequality?
The main purpose of this paper is to give some answers to the question,and put all the numbers in order.

Please refer to the paper.

1.緒論………………………………………………頁01
2.預備定理…………………………………………頁02
3.主要結果…………………………………………頁04
4.參考文獻…………………………………………頁28

[1] S.S. DRAGOMIR AND C.E.M. PEARCE, Selected Topics on Hermite-Hadamard  
   Inequalities,
  (RGMIA Monographs http://rgmia.vu.edu.au/monographs/hermite_hadamard.html),
   Victoria University, 2000.
[2] A.EL FARISSI,Simple proof and refinement of Hermite-Hadamard inequality,Journal of Mathematical Inequalities Vol.4 No.3 (2010),365,369.
[3] D.S. MITRINOVIĆ AND I.B. LACKOVIĆ,Hermite and convexity, Aequationes Math., 28 (1985), 229-232.
[4] C. NICULESCU AND L.E. PERSSON,Old and new on the Hermite-Hadamard inequality, Real Analysis Exchange, 2004.