Apr 28, 2020 · 1 $\begingroup$ When one thinks of matrix products like that, it's helpful to remember that matrices, unlike vectors, have two sets of bases: one for the domain and one …

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。知乎凭借认真、专业 …

Dec 2, 2024 · What is the expansion for $(1-x)^{-n}$? Could find only the expansion upto the power of $-3$. Is there some general formula?

Jan 15, 2013 · The main reason that it takes so long to get to $1+1=2$ is that Principia Mathematica starts from almost nothing, and works its way up in very tiny, incremental steps. …

One can write $$1+\frac12+\frac13+\cdots+\frac1n=\gamma+\psi(n+1)$$ where $\gamma$ is Euler's constant and $\psi$ is the digamma function. Of course, one reason for creating the …

Stack Exchange Network. Stack Exchange network consists of 183 Q&A communities including Stack Overflow, the largest, most trusted online community for developers to learn, share their …

日常摄入热量的单位一般用“卡路里”来计算，简称卡，1千卡=1000卡（也称为1大卡）。 千焦和千卡的换算关系是：1000千焦=238.9大卡，1 大卡（千卡）=4.18千焦（KJ），一般千焦换算成 …

1. 1.1. 1.1.1. 1.1.1.1. 金字塔结构，这种一般在成人本科论文中遇到的比较多； 这样的金字塔标题层级清晰，让读者可以很容易地理解论文的结构和内容。 以上就是我的回答如果还有什么问题 …

Feb 3, 2021 · Stack Exchange Network. Stack Exchange network consists of 183 Q&A communities including Stack Overflow, the largest, most trusted online community for …

Oct 15, 2015 · in your Estimation of Population Mean meaning, that mean plus or minus 1.96 times its standard deviation gives 95% C.I. Errors distr. estimation is considered to use t-distr …