摘要: 原题链接:https://artofproblemsolving.com/community/c4h3687790_1st_penchick_online_mathematical_olympiad_qualifying_test_1_iii4 解答: 令 , . (统一分母)整理得:代入原式 均值 阅读全文
posted @ 2025-10-07 23:08 JMCE 阅读(25) 评论(2) 推荐(0)