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圆锥曲线共焦点:一道高三模拟试题的推广证明

当前时间： 1970-01-01 08:00:00 分类：办公文件 评论(0)
圆锥曲线共焦点:一道高三模拟试题的推广证明

圆锥曲线共焦点:一道高三模拟试题的推广证明

今天分享哈尔滨三中2023届高三一模填空压轴试题的一般性推广结论及其证明。

【结论呈现】

【结论证明】

以上内容均为个人观点。

若有错误或不足，欢迎各位读者留言指正、补充完善。

感谢阅读，期待你的关注与支持。

基本 文件 流程 错误 SQL 调试
  1. 请求信息 : 2026-07-11 18:17:37 HTTP/1.1 GET : https://www.yeyulingfeng.com/a/846225.html
  2. 运行时间 : 0.106563s [ 吞吐率：9.38req/s ] 内存消耗：4,669.84kb 文件加载：145
  3. 缓存信息 : 0 reads,0 writes
  4. 会话信息 : SESSION_ID=037553c10510dbf28f30e45519fb1afc
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  1. CONNECT:[ UseTime:0.000540s ] mysql:host=127.0.0.1;port=3306;dbname=wenku;charset=utf8mb4
  2. SHOW FULL COLUMNS FROM `fenlei` [ RunTime:0.000738s ]
  3. SELECT * FROM `fenlei` WHERE `fid` = 0 [ RunTime:0.000329s ]
  4. SELECT * FROM `fenlei` WHERE `fid` = 63 [ RunTime:0.000255s ]
  5. SHOW FULL COLUMNS FROM `set` [ RunTime:0.000518s ]
  6. SELECT * FROM `set` [ RunTime:0.000244s ]
  7. SHOW FULL COLUMNS FROM `article` [ RunTime:0.000564s ]
  8. SELECT * FROM `article` WHERE `id` = 846225 LIMIT 1 [ RunTime:0.000371s ]
  9. UPDATE `article` SET `lasttime` = 1783765057 WHERE `id` = 846225 [ RunTime:0.023259s ]
  10. SELECT * FROM `fenlei` WHERE `id` = 64 LIMIT 1 [ RunTime:0.000277s ]
  11. SELECT * FROM `article` WHERE `id` < 846225 ORDER BY `id` DESC LIMIT 1 [ RunTime:0.000507s ]
  12. SELECT * FROM `article` WHERE `id` > 846225 ORDER BY `id` ASC LIMIT 1 [ RunTime:0.000358s ]
  13. SELECT * FROM `article` WHERE `id` < 846225 ORDER BY `id` DESC LIMIT 10 [ RunTime:0.000688s ]
  14. SELECT * FROM `article` WHERE `id` < 846225 ORDER BY `id` DESC LIMIT 10,10 [ RunTime:0.000770s ]
  15. SELECT * FROM `article` WHERE `id` < 846225 ORDER BY `id` DESC LIMIT 20,10 [ RunTime:0.000798s ]
0.108210s