数学竞赛不是数学，就是职业技能培训和瓦工，钳工竞赛一个样子。99%的学数学分析，看不到无穷小的魅力，牛顿之流的伟大

来源: BJming 于 2024-06-18 16:41:55 [旧帖] [给我悄悄话] 本文已被阅读：次

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