摘要: 韦达定理 http://baike.baidu.com/link?url=M45ozZEnQ4BtKD7l22WWgQuGnmDYV7TFynQcPEO2Tt8leYGhyEa1flt-RM34NG4w1ORXDBH6EPKkfm7hLKi26u--jwR3a2GXFbWHiQV5NKnk_ld0z 阅读全文
posted @ 2017-04-12 10:28 rexzhao 阅读(218) 评论(0) 推荐(0) 编辑