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Logarithic—Heronian—Identric平均不等式
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作者 朱灵 张桂芳 《贵州商业高等专科学校学报》 1992年第4期18-21,共4页
设a,b为两个不相等的正数,本文主要证明了以下两个不等式结果:(1)(2)[Hc(a<sup>1/α</sup>,b<sup>1/α</sup>)]<sup>α</sup>关于α(α】0)单调下降,其中Hc(a,b)=(a+(ab)<sup>1/2&... 设a,b为两个不相等的正数,本文主要证明了以下两个不等式结果:(1)(2)[Hc(a<sup>1/α</sup>,b<sup>1/α</sup>)]<sup>α</sup>关于α(α】0)单调下降,其中Hc(a,b)=(a+(ab)<sup>1/2</sup>+b) 展开更多
关键词 Heronian identric Logarithic 单调下降 指数平均 二止
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An Elementary Proof of the Mean Inequalities
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作者 Ilhan M. Izmirli 《Advances in Pure Mathematics》 2013年第3期331-334,共4页
In this paper we will extend the well-known chain of inequalities involving the Pythagorean means, namely the harmonic, geometric, and arithmetic means to the more refined chain of inequalities by including the logari... In this paper we will extend the well-known chain of inequalities involving the Pythagorean means, namely the harmonic, geometric, and arithmetic means to the more refined chain of inequalities by including the logarithmic and identric means using nothing more than basic calculus. Of course, these results are all well-known and several proofs of them and their generalizations have been given. See [1-6] for more information. Our goal here is to present a unified approach and give the proofs as corollaries of one basic theorem. 展开更多
关键词 PYTHAGOREAN MEANS ARITHMETIC Mean GEOMETRIC Mean HARMONIC Mean identric Mean Logarithmic Mean
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