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为什么 1 不能被认为是质数? - 知乎 m = p 1 a 1 p 2 a 2 p 3 a 3 p n a n 什么意思呢? 它表示这样一个结论:对于任意的一个整数,你都能把它因数分解,而且结果是唯一的。 举个例子:1001只能被分解成7×11×13,而且你再也找不到除 (7,11,13)外的一组质数,使它们的乘积是1001。 那么这个定理有什么用呢?
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 sequence gives the next term In other words, an=a1+d (n−1) Arithmetic Sequence: d=1 8
False Proof of 1=-1 - Mathematics Stack Exchange Oh, it sounds like Ivm asking those questions rhetorically I'm not They are very subtle and difficult questions Ponder them and think about them Part of the problem is that we really abuse what a−−√ a means What does it mean? how many values does it have? Is it unambiguous in meaning?