Posted by haifeng on 2023-12-27 12:54:01 last update 2023-12-27 12:54:12 | Answers (1) | 收藏
用柯西审敛准则证明下列级数收敛.
1. $\sum\limits_{n=1}^{\infty}\dfrac{(-1)^{n+1}}{n}$
