摘要: Let a power series $$S(x)=\sum_{n=1}^{\infty}\frac{x^{n}}{4n+1},$$ then $1$ is the radius of convergence of $S$ .In fact $S(x)$ convergens for each $x... 阅读全文
posted @ 2015-08-02 12:08 李心怡 阅读(542) 评论(0) 推荐(0) 编辑