"数学的美是了解同一问题的各种解答方案，从中找出最优化的方案。" 这是俺一直坚持下来的习惯，也跟闺女说了这事

来源: linda2 于 2018-04-07 22:01:09 [博客] [旧帖] [给我悄悄话] 本文已被阅读：次

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