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  1. What does $QAQ^{-1}$ actually mean? - Mathematics Stack …

    Apr 28, 2020 · I'm self-learning Linear Algebra and have been trying to take a geometric approach to understand what matrices mean visually. I've noticed this matrix product pop up repeatedly …

  2. summation - Sum of 1 + 1/2 - Mathematics Stack Exchange

    How do I calculate this sum in terms of 'n'? I know this is a harmonic progression, but I can't find how to calculate the summation of it. Also, is it an expansion of any mathematical function? 1 ...

  3. 知乎 - 知乎

    知乎是一个可信赖的问答社区,汇集了各行各业的亲历者、内行人和领域专家,为用户提供高质量的内容和交流机会。

  4. 1/8, 1/4, 1/2, 3/4,7/8英寸分别是多少厘米? - 知乎

    把1英寸分成8等分: 1/8 1/4 3/8 1/2 5/8 3/4 7/8 英寸。 This is an arithmetic sequence since there is a common difference between each term. In this case, adding 18 to the previous term in the …

  5. 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。

  6. factorial - Why does 0! = 1? - Mathematics Stack Exchange

    Possible Duplicate: Prove 0! = 1 0! = 1 from first principles Why does 0! = 1 0! = 1? All I know of factorial is that x! x! is equal to the product of all the numbers that come before it. The product …

  7. Mathematics Stack Exchange

    Q&A for people studying math at any level and professionals in related fields

  8. Taylor series of $\\ln(1+x)$? - Mathematics Stack Exchange

    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 …

  9. 1加十三手机(一加13)怎么样?体验3天优缺点测评

    Nov 4, 2024 · 二:一加13(1加十三手机)优点 强大的性能配置:搭载了骁龙8至尊版移动平台,这是高通最新一代的旗舰级处理器,采用台积电第二代3nm工艺制程,CPU则采用了高通自 …

  10. abstract algebra - Prove that 1+1=2 - Mathematics Stack Exchange

    Jan 15, 2013 · Possible Duplicate: How do I convince someone that $1+1=2$ may not necessarily be true? I once read that some mathematicians provided a very length proof of $1+1=2$. Can …