名校
解题方法
1 . 已知
是正数,且函数
在区间
上无极值,则
的取值范围是__________ .
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/074c228ffc7b1e306f8410afe7bc4b5c.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/cf38918675d03649651f4f341a34a2c7.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e68d62482d548bcd517188178fd36bc3.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/074c228ffc7b1e306f8410afe7bc4b5c.png)
您最近一年使用:0次
2 . 若函数
仅在
处有极值,则实数
的取值范围是__________ .
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c774464348357a0a88443550882b5b68.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/bb45f673c56a289ea78831c9237e8d20.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0a6936d370d6a238a608ca56f87198de.png)
您最近一年使用:0次
3 . 已知函数
在
处取得极值,则
的值为 ___________ .
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c32124500548b4e3e4890482b3c887c4.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/9b384412acba251d87902ab928902f16.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0a6936d370d6a238a608ca56f87198de.png)
您最近一年使用:0次
解题方法
4 . 已知常数
都是实数,
的导函数为
的解集为
,若
的极小值等于-105,则
的值是__________ .
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/76f0649064a085fb74c997fb507a9b6d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/856ee302446fe319f44351b089d5ba0a.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/220fc057b9c9b140f921910f9821a9cf.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7716b7668ee354695dc20e69704795d7.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4fe7d5809da02c15a43a0e9a898b9086.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0a6936d370d6a238a608ca56f87198de.png)
您最近一年使用:0次
解题方法
5 . 已知函数f(x)=ax2+bln x在x=1处有极值
.则![](https://staticzujuan.xkw.com/quesimg/Upload/formula/892560dcff6af9f66a3f735652f69dd7.png)
__________
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/3cfa1e7ffae662aefb49a44c52d4954d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/892560dcff6af9f66a3f735652f69dd7.png)
您最近一年使用:0次
解题方法
6 . 在
上的函数
满足:①
(
为正常数);②当
时,
,若函数
的图象上所有极大值对应的点均落在同一条直线上,则
等于________ .
![](https://img.xkw.com/dksih/QBM/2016/2/15/1572477603610624/1572477609689088/STEM/740e4611b36242b2ad93ab2f7b8e92cf.png?resizew=48)
![](https://img.xkw.com/dksih/QBM/2016/2/15/1572477603610624/1572477609689088/STEM/e679c427c0564188aada9ab4da289b91.png?resizew=39)
![](https://img.xkw.com/dksih/QBM/2016/2/15/1572477603610624/1572477609689088/STEM/b2642363f6e648378a5428f0926c54ef.png?resizew=100)
![](https://img.xkw.com/dksih/QBM/2016/2/15/1572477603610624/1572477609689088/STEM/f0c51a85b5454d72afb01d280bb839c5.png?resizew=12)
![](https://img.xkw.com/dksih/QBM/2016/2/15/1572477603610624/1572477609689088/STEM/b2d605b0bc864625afa85ebc00e3e6de.png?resizew=61)
![](https://img.xkw.com/dksih/QBM/2016/2/15/1572477603610624/1572477609689088/STEM/245f36dede6d4729a4496995d81e0b64.png?resizew=120)
![](https://img.xkw.com/dksih/QBM/2016/2/15/1572477603610624/1572477609689088/STEM/e679c427c0564188aada9ab4da289b91.png?resizew=39)
![](https://img.xkw.com/dksih/QBM/2016/2/15/1572477603610624/1572477609689088/STEM/f0c51a85b5454d72afb01d280bb839c5.png?resizew=12)
您最近一年使用:0次
解题方法
7 . 在下列命题中
①函数
在定义域内为单调递减函数;
②函数
的最小值为
;
③已知定义在
上周期为4的函数
满足
,则
一定为偶函数;
④已知函数
,则
是
有极值的必要不充分条件;
⑤已知函数
,若
,则
.
其中正确命题的序号为______________ (写出所有正确命题的序号).
①函数
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/11ede389b43c78417912542746d91d00.png)
②函数
![](https://img.xkw.com/dksih/QBM/2015/3/31/1572051952041984/1572051957383168/STEM/1405346a0a20465795c2deddac96cdaa.png?resizew=132)
![](https://img.xkw.com/dksih/QBM/2015/3/31/1572051952041984/1572051957383168/STEM/414997acf4274313b1f096344c63feff.png?resizew=33)
③已知定义在
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4aa0df7f1e45f9de29e802c7f19a4f64.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4fe7d5809da02c15a43a0e9a898b9086.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b4c01ab30854f54c2514d1a05f779b35.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4fe7d5809da02c15a43a0e9a898b9086.png)
④已知函数
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/75044e0301ef9def5c1a1c8e6f2cba77.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/9e56f4504e0f80fd031c8b5f41832e03.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4fe7d5809da02c15a43a0e9a898b9086.png)
⑤已知函数
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/52142482df6bbd431d300f011e3ccb12.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/33ecda7bfb0a2043306bf7707a136ad0.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/356704dd58441206abb070f2b8fc0cc8.png)
其中正确命题的序号为
您最近一年使用:0次