此解甚妙！如果建坐标系，用解析几何似乎也可以是一个解

来源: 万斤油于 2022-02-03 20:23:04 [博客] [旧帖] [给我悄悄话] 本文已被阅读：次

WENXUECITY.COM does not represent or guarantee the truthfulness, accuracy, or reliability of any of communications posted by other users.