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本文所要证明的这个重要不等式,是从一道竞赛试题证明过程中得到的,其证明可以用初等数学知识,在此,我们将用微分方法给予证明。
This important inequality to be proved in this paper is obtained from the proof process of a competition test. The proof can use elementary mathematics knowledge. Here, we will use the differential method to give proof.