平均數不等式: Revision history

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13 February 2025

  • curprev 15:2415:24, 13 February 2025 imported>的地得73 2,689 bytes +2,689 新文「'''平均數不等式'''者,又云'''平均值不等式'''、'''均值不等式''',乃數學之朋不等式,亦基本不等式之推廣也。曰: <math>x_1, x_2, \ldots, x_n \in \mathbb{R_{+}}\Rightarrow\dfrac{n}{\displaystyle \sum_{i=1}^{n} \dfrac{1}{x_i}} \le \sqrt[n]{\prod_{i=1}^nx_i} \le \dfrac{\displaystyle \sum_{i=1}^{n} x_i }{n} \le \sqrt{\dfrac{\displaystyle \sum_{i=1}^{n} x_i ^2}{n}}</math> 其乃<math>H_n \le G_n \le A_n \le Q_n</math>。 中: <……」