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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 …
1/1+1/2+1/3+1/4+……+1/n=?怎么个解法? - 知乎
两边求和,我们有 ln (n+1)<1/1+1/2+1/3+1/4+……+1/n 容易的, \lim _ {n\rightarrow +\infty }\ln \left ( n+1\right) =+\infty ,所以这个和是无界的,不收敛。
iOS18.4.1 正式版发布了,这次更新究竟带来了哪些实质性的变 …
iOS 18.4.1虽为“小版本”更新,但修复力度与实用性堪比大版本迭代。 从CarPlay的“起死回生”到安全漏洞的彻底封堵,苹果再次展现了快速响应与深度优化的能力。
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 …
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 …
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Mathematics Stack Exchange
Q&A for people studying math at any level and professionals in related fields
为什么 1 不能被认为是质数? - 知乎
质数就是“只能被1和它本身整除”的自然数。 然而,我们必须在此基础之上增加一条警告,宣称数字1不是质数,这简直就像马后炮一样。
Given a 95% confidence interval why are we using 1.96 and not …
Oct 15, 2015 · 1 Two reasons: 1) Students are in New Jersey. 2) the z z -value associated with 95% is z=1.96; this can be seen as part of the 1-2-3, 65-95-99 rule that tells you that values …
Primes of the form $n^2+1$ - hard? - Mathematics Stack Exchange
This is a sub-problem of the Bunyakovsky conjecture. I have an interactive form of it at The Bouniakowsky Conjecture. Let f be an integer-coefficient irreducible polynomial with degree …
Easy way to remember Taylor Series for log(1+x)?
May 2, 2015 · Assuming $|x|<1$, if one can easily remember that $$ \\dfrac{1}{1-x}=\\sum_{n=0}^{\\infty}x^{n} $$ then one can derive the following \\begin{eqnarray*} \\mbox{log ...