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真题精讲第8讲 |看到偏导别急着算!这类二阶偏导题,考的其实是“结构识别”

2026-08-08 09:15:33

真题精讲第8讲 |看到偏导别急着算!这类二阶偏导题,考的其实是“结构识别”

📅每日一讲陪伴第273天

内容✍️ 姜晓千

排版🎨 养乐多

各位27考研弟子们，

欢迎开始晓千老师的「每日一讲」系列

每日一讲，先讲知识点，再讲做题方法，

让同学们扎扎实实地学好考研数学！

目前正在进行的是「真题精讲每日一讲」

今天要讲解的内容：

真题精讲（八）

PART

PART

视频解析

重播分享赞

今天做题有什么收获？

欢迎在评论区告诉晓千老师

「晓千老师弟子班」课程上架啦

赶快加入千家军

跟晓千老师一起拿捏老头吧

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CONNECT:[ UseTime:0.000404s ] mysql:host=127.0.0.1;port=3306;dbname=www_sjds;charset=utf8mb4
SHOW FULL COLUMNS FROM `fenlei` [ RunTime:0.000571s ]
SELECT * FROM `fenlei` WHERE `fid` = 0 [ RunTime:0.004493s ]
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SHOW FULL COLUMNS FROM `set` [ RunTime:0.000489s ]
SELECT * FROM `set` [ RunTime:0.003229s ]
SHOW FULL COLUMNS FROM `article` [ RunTime:0.000563s ]
SELECT * FROM `article` WHERE `id` = 509939 LIMIT 1 [ RunTime:0.004500s ]
UPDATE `article` SET `lasttime` = 1786161880 WHERE `id` = 509939 [ RunTime:0.006073s ]
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SELECT * FROM `article` WHERE `id` < 509939 ORDER BY `id` DESC LIMIT 1 [ RunTime:0.004058s ]
SELECT * FROM `article` WHERE `id` > 509939 ORDER BY `id` ASC LIMIT 1 [ RunTime:0.004042s ]
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SELECT * FROM `article` WHERE `id` < 509939 ORDER BY `id` DESC LIMIT 10,10 [ RunTime:0.002398s ]
SELECT * FROM `article` WHERE `id` < 509939 ORDER BY `id` DESC LIMIT 20,10 [ RunTime:0.002767s ]

0.106921s

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