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钟忠:解网友“23”㋉㏯配平方和练习题

  • 2026-11-11 04:34:49
钟忠:解网友“23”㋉㏯配平方和练习题
点击上面蓝色文字关注杨志明数学角
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17年新课标I、10年新课标II、5年新课标III高考数学真题详细解析
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每日一题(001-099)试题分类
2021年高考数学常用公式及结论
单墫数学随笔文集(2019.10.20-2020.2.4)
杨志明公开征解问题385题
杨志明:解析几何微专题讲座大全(108讲)
杨志明:2021年高考数学重要专题讲座
第1-63届(1959-2022)IMO国际数学奥林匹克试题解答集锦
近三十六届(1986-2021)中国数学奥林克试题及解答集锦

数学竞赛常用知识手册

近三十七年(1986- 2022)IMO中国国家集训队选拔考试试题及参考答案集锦

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近十四届(2005-2018年)中国北方数学奥林匹克试题及解答集锦

近十七年(2004-2020)中国东南地区数学奥林匹克试题及解答集锦

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【钟忠论文专辑】

钟忠:“2026.10.11杨志明”猜想的解答

钟忠:“anzhenping数学学习”《20261009不等式问题》的一般化

钟忠:一道发轫于“安振平代数不等式(2026‐10‑11)”的征解

钟忠:从刘健先生对三角形中线长的一个上界的均值法证明说开来

钟忠:评刘健先生的一个三角形不等式猜想

钟忠:关于“三角形中一个不等式证明”

钟忠:答刘保乾先生㋈㏤问

钟忠:答刘保乾先生㋈㏢问

钟忠:比值(wa-2r)∕(wa+2r)的一个下界

钟忠:比值(wa-2r)∕(wa+2r)的一个下界(续完)

钟忠:成功证明一道号称值得「入册」的不等式

钟忠:Mathematical Reflections问题U730的非“undergraduate”解答

钟忠:一对纸老虎不等式的证明

钟忠:“陈胜利先生征解提问(691)”(1)的非增量证法
钟忠:某号称「差分代换不终止」不等式的证明(兼谈中线长的下界)
钟忠:Mathematical Reflections问题O707的解答
钟忠:关于△中Nagel线长之和的上下界
钟忠:陈胜利征解问题20250212⒉的配方证法
钟忠:陈胜利先生专著读后感一则
钟忠:“陈胜利问题征解(533)”第2问的解答
钟忠:《从BOTTEMA失效的两道求参数最佳值问题谈起》勘误
钟忠:从BOTTEMA失效的两道求参数最佳值问题谈起
钟忠:金猴奋起千钧棒,玉宇澄清万里埃——“张楚星问题征解(2024.08.04)”百日宴纪实
钟忠:「Солтан–Мейдман法」在这一带特殊取等号条件的不等式中莫非已毫无用武之地了么?!
钟忠:刘保乾“一个优美的亖元不等式猜想”的证明
钟忠:《续谈BOTTEMA软体在求解“等腰取等”不等式中的功用》附录
钟忠:续谈BOTTEMA框架在求解“等腰取等”不等式中的功用
钟忠:几个“全退化取等”的局部对称不等式的注记
钟忠:三角形中半角正余弦和的“等腰取等”上下界
钟忠:关于刘保乾老师的“求级数和有奖征解”
钟忠:就一类三棱锥存在性答楊學枝先生问
钟忠:某一元多项式正定性的零知识证明
钟忠:浅谈2次函数性质在“陈胜利征解问题(379)20240309”⒈妙解中的运用
钟忠征解问题:趣味算学征解之奇妙的6点共圆问题⑵
钟忠征解问题:趣味算学征解之奇妙的6点共圆问题⑴
钟忠:简证“张赟”的四面体不等式(及类似)
钟忠:刘保乾一组多元局部对称不等式之证
钟忠:《数学爱好者通讯》第 262 期数学问题研究 A 的推广
钟忠:叶军数学问题征解(2023.12.11)的构造性证明
钟忠:陈胜利「 问题征解(331) 20231204」 的赏析
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  1. CONNECT:[ UseTime:0.000764s ] mysql:host=172.18.0.4;port=3306;dbname=www_sjds;charset=utf8mb4
  2. SHOW FULL COLUMNS FROM `fenlei` [ RunTime:0.000959s ]
  3. SELECT * FROM `fenlei` WHERE `fid` = 0 [ RunTime:0.000477s ]
  4. SELECT * FROM `fenlei` WHERE `fid` = 63 [ RunTime:0.000385s ]
  5. SHOW FULL COLUMNS FROM `set` [ RunTime:0.000751s ]
  6. SELECT * FROM `set` [ RunTime:0.000337s ]
  7. SHOW FULL COLUMNS FROM `article` [ RunTime:0.000876s ]
  8. SELECT * FROM `article` WHERE `id` = 543075 LIMIT 1 [ RunTime:0.000534s ]
  9. UPDATE `article` SET `lasttime` = 1794352126 WHERE `id` = 543075 [ RunTime:0.002932s ]
  10. SELECT * FROM `fenlei` WHERE `id` = 65 LIMIT 1 [ RunTime:0.000467s ]
  11. SELECT * FROM `article` WHERE `id` < 543075 ORDER BY `id` DESC LIMIT 1 [ RunTime:0.000557s ]
  12. SELECT * FROM `article` WHERE `id` > 543075 ORDER BY `id` ASC LIMIT 1 [ RunTime:0.000558s ]
  13. SELECT * FROM `article` WHERE `id` < 543075 ORDER BY `id` DESC LIMIT 10 [ RunTime:0.000595s ]
  14. SELECT * FROM `article` WHERE `id` < 543075 ORDER BY `id` DESC LIMIT 10,10 [ RunTime:0.000649s ]
  15. SELECT * FROM `article` WHERE `id` < 543075 ORDER BY `id` DESC LIMIT 20,10 [ RunTime:0.000738s ]
0.089743s