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1772 年欧拉是如何算出奇数立方的倒数和公式的?

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TSC999 posted 2022-12-24 21:24 |Read mode
Last edited by TSC999 2022-12-27 18:471772 年,欧拉算出了全体奇数的立方倒数和公式为:

\[1+\frac{1}{3^3}+\frac{1}{5^3}+\frac{1}{7^3}+\cdots=\frac{\pi^2}{4}\ln2+2\int_0^\frac{\pi}{2}x \ln(\sin x)dx\]

他是如何计算的?

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original poster TSC999 posted 2022-12-27 20:30
据说欧拉在他的名著《无穷分析引论》中讲了这个问题。
哪位先生有这本书的电子版?

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uk702 posted 2022-12-27 21:06
TSC999 发表于 2022-12-27 20:30
据说欧拉在他的名著《无穷分析引论》中讲了这个问题。
哪位先生有这本书的电子版? ...
不知是不是这个?质量很一般的扫描版,有好几M,放不上来,要不你留个 email?
2022-12-27_210526.png

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hbghlyj posted 2022-12-28 02:48
无穷分析引论 上
无穷分析引论 下
[瑞士]欧拉 著 张延伦 译

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original poster TSC999 posted 2022-12-28 08:48
谢谢各位大侠! 如有电子版书,烦请发到本人邮箱:

cc656654817@126.com

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麻烦转发一下:68665295@qq.com,谢谢!  posted 2023-1-4 18:59

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