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What does $QAQ^{-1}$ actually mean? - Mathematics Stack …
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 …
abstract algebra - Prove that 1+1=2 - Mathematics Stack Exchange
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. …
Series expansion: $\frac{1}{(1-x)^n}$ - Mathematics Stack Exchange
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?
如何看待2025江苏国补在6月1日突然暂停下线? - 知乎
在618活动刚开始时暂停线上国补是什么原因?后续何时还会再次开启?
Double induction example: $ 1 + q + q^2 - Mathematics Stack …
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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 …
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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 …
Prove that $1^3 + 2^3 + ... + n^3 = (1+ 2 + ... + n)^2$
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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 …
Given a 95% confidence interval why are we using 1.96 and not …
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 …