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陕西文科数学压轴题与hadamard不等式

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青青子衿 posted 2013-11-2 13:47 |Read mode
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出题者可谓是高屋建瓴!

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icesheep posted 2013-11-2 16:04
早前就有一些高中题牵扯到对数均值不等式了,$b > a > 0$
\[\sqrt {ab}  < \frac{{b - a}}{{\ln b - \ln a}} < \frac{{a + b}}{2}\]
original poster 青青子衿 posted 2020-10-7 16:32
Last edited by 青青子衿 2020-10-8 10:39裴礼文《数学分析中典型问题与方法》P335~356
朱尧辰《大学生数学竞赛题选解》P103~104
周民强《微积分专题论丛》P19
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