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  1. 知乎 - 有问题,就会有答案

    知乎,中文互联网高质量的问答社区和创作者聚集的原创内容平台,于 2011 年 1 月正式上线,以「让人们更好的分享知识、经验和见解,找到自己的解答」为品牌使命。

  2. Binomial expansion of $ (1-x)^n$ - Mathematics Stack Exchange

    I'm not sure how appropriate it is to answer questions this old, but compared to the methods above, I feel the easiest way to see the answer to this question is to take a = -x And substitute …

  3. Laurent-series expansion of $1/ (e^z-1)$ - Mathematics Stack …

    You'll need to complete a few actions and gain 15 reputation points before being able to upvote. Upvoting indicates when questions and answers are useful. What's reputation and how do I …

  4. 总是听说降雨量多少毫米这样,那想请问一下降雨量1毫米是什么 …

    1毫米的雨, 如果落在1㎡的地面上,如果不考虑蒸发,地表径流,渗入,那么这些雨水的体积为1升,也就是 两瓶500毫升矿泉水的水量, 如果落在 1万平米(≈1.4个足球场) 的地面上,就 …

  5. Prove that $1^3 + 2^3 + ... + n^3 = (1+ 2 + ... + n)^2$

    Do you know a simpler expression for $1+2+\ldots+k$? (Once you get the computational details worked out, you can arrange them more neatly than this; I wrote this specifically to suggest a …

  6. 想请大神给小白科普一下音频声道的专业知识,什么是2.1声道、5.…

    Oct 27, 2024 · 5.1声道的第一次使用,追溯到1976年,当时杜比实验室修改了Todd-AO 70毫米胶片上6个类比音轨的使用方式,但当时在电影《洛根的逃亡》中杜比实验室的光学矩阵编码系 …

  7. Formula for $1^2+2^2+3^2+...+n^2$ - Mathematics Stack …

    (n+1)3−n3 =3n2+3n+1 (n + 1) 3 n 3 = 3 n 2 + 3 n + 1 - so it is clear that the n2 n 2 terms can be added (with some lower-order terms attached) by adding the differences of cubes, giving a …

  8. 游戏评测的 1% 最低帧(1% Low FPS)是什么意思? - 知乎

    2、最高性能 电脑性能冗余越大,1%就越接近平均帧。 通常来说,体验派的3A大作比如赛博朋克2077、荒野大镖客2,1%LOW在50以上时,就能带来不错的游戏体验。 而偏向PVP或者竞技 …

  9. General term formula of series 1/1 + 1/2 + 1/3 ... +1/n

    Continue to help good content that is interesting, well-researched, and useful, rise to the top! To gain full voting privileges,

  10. Word,插入多级列表,但是改了1.1,第二章的2.1也变成1.1,随着 …

    注1:【】代表软件中的功能文字 注2:同一台电脑,只需要设置一次,以后都可以直接使用 注3:如果觉得原先设置的格式不是自己想要的,可以继续点击【多级列表】——【定义新多级 …