07 2024 档案

摘要:https://math.stackexchange.com/questions/3384251/into-how-many-regions-do-the-sides-and-diagonals-of-a-convex-n-gon-divide-the \[f(n)=f(n-1)+1+(\sum_{ 阅读全文
posted @ 2024-07-15 16:35 Zelotz 阅读(56) 评论(0) 推荐(0) 编辑

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