摘要: P12 练习题1.2 1. (10) $\begin{align*}\lim\limits_{n\rightarrow \infty} \frac{n^2 \arctan n}{1+n^2} = \frac{\pi}{2}\end{align*}$ 因为$$\begin{align*}\frac{n 阅读全文
posted @ 2015-09-28 15:07 oucmath 阅读(446) 评论(0) 推荐(0)