我们知道，许多重要的不等式都可由导出，从其种意 义上可以说该不等式是代数不等式理论的酵母．文［１］用构造图形的方法证明了：设ａ、ｂ实，我们可以用几何的方法证明下面的均值不等式，这个不等式在中学数学里具有基本的重要性． 定理 设 ａ＞０，ｂ＞０，则 且这些不 We know that many important inequalities can be derived, from which it can be said that the inequality is the yeast of algebraic inequality theory. The paper [1] proves that by using the method of constructing graphs: Let a, b be real, we can use the geometric method to prove the following mean inequality, this inequality has the basic importance in middle school mathematics. Theorem Let a>0, b>0, and these are not