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三角恒等变换3教案(求值求角)

  • 2026-11-03 00:02:39
三角恒等变换3教案(求值求角)

两节课的内容

讲了1，做234，点了56思路。

讲了7，做89，第9题不注意缩角，错误百出。

小结回顾后，做56及10，投影对答案，重点又强调了10。

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安全生产专业实务煤矿安全讲义:第十章矿山救护第一节矿山救护工作要点

基本 文件 流程 错误 SQL 调试
  1. 请求信息 : 2026-11-09 01:43:31 HTTP/1.1 GET : http://a.sjds.net/a/459689.html
  2. 运行时间 : 0.072849s [ 吞吐率：13.73req/s ] 内存消耗：4,498.85kb 文件加载：140
  3. 缓存信息 : 0 reads,0 writes
  4. 会话信息 : SESSION_ID=b3dfc0a452d98f8c8fd50dc02738ee32
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  1. CONNECT:[ UseTime:0.000737s ] mysql:host=172.18.0.4;port=3306;dbname=a_sjds;charset=utf8mb4
  2. SHOW FULL COLUMNS FROM `fenlei` [ RunTime:0.001058s ]
  3. SELECT * FROM `fenlei` WHERE `fid` = 0 [ RunTime:0.000364s ]
  4. SELECT * FROM `fenlei` WHERE `fid` = 63 [ RunTime:0.000355s ]
  5. SHOW FULL COLUMNS FROM `set` [ RunTime:0.000499s ]
  6. SELECT * FROM `set` [ RunTime:0.000363s ]
  7. SHOW FULL COLUMNS FROM `article` [ RunTime:0.000606s ]
  8. SELECT * FROM `article` WHERE `id` = 459689 LIMIT 1 [ RunTime:0.000383s ]
  9. UPDATE `article` SET `lasttime` = 1794159811 WHERE `id` = 459689 [ RunTime:0.001412s ]
  10. SELECT * FROM `fenlei` WHERE `id` = 64 LIMIT 1 [ RunTime:0.000371s ]
  11. SELECT * FROM `article` WHERE `id` < 459689 ORDER BY `id` DESC LIMIT 1 [ RunTime:0.000394s ]
  12. SELECT * FROM `article` WHERE `id` > 459689 ORDER BY `id` ASC LIMIT 1 [ RunTime:0.000474s ]
  13. SELECT * FROM `article` WHERE `id` < 459689 ORDER BY `id` DESC LIMIT 10 [ RunTime:0.000890s ]
  14. SELECT * FROM `article` WHERE `id` < 459689 ORDER BY `id` DESC LIMIT 10,10 [ RunTime:0.000611s ]
  15. SELECT * FROM `article` WHERE `id` < 459689 ORDER BY `id` DESC LIMIT 20,10 [ RunTime:0.000528s ]
0.083035s