解题方法
1 . 函数
的单调递减区间是( )
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7f3de6008179abb05d61b93ab20488b2.png)
A.![]() | B.![]() |
C.![]() | D.![]() |
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2 . 已知函数
.
(1)讨论
函数的单调性;
(2)设
的两个零点是
,
,求证:
.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/adb023526bcd23fbd47d6acb5618287c.png)
(1)讨论
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/09f86f37ec8e15846bd731ab4fcdbacd.png)
(2)设
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/09f86f37ec8e15846bd731ab4fcdbacd.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c814128ea2139e33db94ea590e7c2223.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/aec19b68e3add9d5bfcc6269a1855b87.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d9ace1f83938a370166b82e68f439dfd.png)
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2017-12-11更新
|
1370次组卷
|
5卷引用:辽宁省实验中学北校区2021-2022学年高三上学期第一次月考数学试题
3 . 已知函数
.
(1)求
的单调区间;
(2)设
,
,
,比较
,
,
的大小.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/490dce7cb6cc2283383d00f7df5b5aac.png)
(1)求
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/09f86f37ec8e15846bd731ab4fcdbacd.png)
(2)设
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/92560f1c46e425ef74cb17b3824efb12.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/dfa9081d42f39ed5e13b6c10b3d3b2a6.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e4b642125439c2bd14fa7a4c58bcdcae.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0a6936d370d6a238a608ca56f87198de.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2c94bb12cee76221e13f9ef955b0aab1.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/071a7e733d466949ac935b4b8ee8d183.png)
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