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高二数学春季讲义解析——5导数恒成立与存在性问题(下)

  • 2026-04-09 18:50:11
高二数学春季讲义解析——5导数恒成立与存在性问题(下)
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高中数学讲义解析——12极坐标与参数方程综合

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  1. CONNECT:[ UseTime:0.001004s ] mysql:host=127.0.0.1;port=3306;dbname=a_sjds;charset=utf8mb4
  2. SHOW FULL COLUMNS FROM `fenlei` [ RunTime:0.001415s ]
  3. SELECT * FROM `fenlei` WHERE `fid` = 0 [ RunTime:0.000645s ]
  4. SELECT * FROM `fenlei` WHERE `fid` = 63 [ RunTime:0.000586s ]
  5. SHOW FULL COLUMNS FROM `set` [ RunTime:0.001232s ]
  6. SELECT * FROM `set` [ RunTime:0.000488s ]
  7. SHOW FULL COLUMNS FROM `article` [ RunTime:0.001368s ]
  8. SELECT * FROM `article` WHERE `id` = 463272 LIMIT 1 [ RunTime:0.000948s ]
  9. UPDATE `article` SET `lasttime` = 1776605896 WHERE `id` = 463272 [ RunTime:0.005253s ]
  10. SELECT * FROM `fenlei` WHERE `id` = 65 LIMIT 1 [ RunTime:0.000540s ]
  11. SELECT * FROM `article` WHERE `id` < 463272 ORDER BY `id` DESC LIMIT 1 [ RunTime:0.000944s ]
  12. SELECT * FROM `article` WHERE `id` > 463272 ORDER BY `id` ASC LIMIT 1 [ RunTime:0.002749s ]
  13. SELECT * FROM `article` WHERE `id` < 463272 ORDER BY `id` DESC LIMIT 10 [ RunTime:0.004295s ]
  14. SELECT * FROM `article` WHERE `id` < 463272 ORDER BY `id` DESC LIMIT 10,10 [ RunTime:0.006029s ]
  15. SELECT * FROM `article` WHERE `id` < 463272 ORDER BY `id` DESC LIMIT 20,10 [ RunTime:0.002783s ]
0.182078s