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2026年长沙市高中数学教师解题比赛节选

  • 2026-05-29 14:51:30
2026年长沙市高中数学教师解题比赛节选
长沙市高中数学教师解题比赛大题部分节选：
解析：
反思：该题是2013年安徽高考原题，前面一段时间是花了大力气对二项分布、超几何分布中的概率最大项和极大似然估计问题进行了整理，但是真正到了考场，其实还是很难完整算出来，计算量太大了。吸取经验教训，对数学公式、定理、二级结论不能一知半解，要熟悉推导过程，一定要做到了如指掌，能够丝滑推导出来！
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  1. CONNECT:[ UseTime:0.000575s ] mysql:host=127.0.0.1;port=3306;dbname=e460;charset=utf8mb4
  2. SHOW FULL COLUMNS FROM `fenlei` [ RunTime:0.000598s ]
  3. SELECT * FROM `fenlei` WHERE `fid` = 0 [ RunTime:0.000241s ]
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  5. SHOW FULL COLUMNS FROM `set` [ RunTime:0.000792s ]
  6. SELECT * FROM `set` [ RunTime:0.000240s ]
  7. SHOW FULL COLUMNS FROM `article` [ RunTime:0.000861s ]
  8. SELECT * FROM `article` WHERE `id` = 537897 LIMIT 1 [ RunTime:0.000538s ]
  9. UPDATE `article` SET `lasttime` = 1780237203 WHERE `id` = 537897 [ RunTime:0.000650s ]
  10. SELECT * FROM `fenlei` WHERE `id` = 64 LIMIT 1 [ RunTime:0.000218s ]
  11. SELECT * FROM `article` WHERE `id` < 537897 ORDER BY `id` DESC LIMIT 1 [ RunTime:0.000395s ]
  12. SELECT * FROM `article` WHERE `id` > 537897 ORDER BY `id` ASC LIMIT 1 [ RunTime:0.000386s ]
  13. SELECT * FROM `article` WHERE `id` < 537897 ORDER BY `id` DESC LIMIT 10 [ RunTime:0.000846s ]
  14. SELECT * FROM `article` WHERE `id` < 537897 ORDER BY `id` DESC LIMIT 10,10 [ RunTime:0.001125s ]
  15. SELECT * FROM `article` WHERE `id` < 537897 ORDER BY `id` DESC LIMIT 20,10 [ RunTime:0.000752s ]
0.076273s