解题方法
1 . 已知函数
,函数
.
(1)求证:方程
在区间
上有唯一的实数根;
(2)若存在实数
,使得
,求实数
的取值范围.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/6cf51d9719b5dba6b64411e961002d3a.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5f608776b92a1cd0f6bc13b865239f96.png)
(1)求证:方程
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/34f16d7a9d2ce1f908ff31e2cdbc8ecb.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/9e11f4ca0e7ace69f92130d0525bcdb3.png)
(2)若存在实数
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/294f5ba74cdf695fc9a8a8e52f421328.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/47e2302295333e96f24e328bc4e1f9dd.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b6a24198bd04c29321ae5dc5a28fe421.png)
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2 . 已知集合
,集合
,则
( )
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c41e6d7a13148c512f443dcffb4a76cf.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/31a90a945eea859452547c6529e88d14.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b4b9b470218359a4a47be9244980489e.png)
A.![]() | B.![]() |
C.![]() | D.![]() |
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名校
3 . 对于函数
,若在定义域内存在实数
满足
,则称
为“倒戈函数”,设函数
是定义在
上的“倒戈函数”,则实数m的取值范围是____________ ;
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/09f86f37ec8e15846bd731ab4fcdbacd.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/79b752f0f189e5d8666daea73e145dff.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/744b07c137166e10db0b54001cb93a28.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/09f86f37ec8e15846bd731ab4fcdbacd.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/85929edefea2bc355c68ec3143a9f466.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/9d188ec2580e273ce87e51653a2177ee.png)
您最近一年使用:0次
2021-11-29更新
|
774次组卷
|
4卷引用:海南省琼海市嘉积中学2022届高三下学期第一次月考数学试题
14-15高一上·安徽淮南·期末
解题方法
4 . 设集合
是函数
的定义域,集合
是函数
的值域.
(Ⅰ)求集合
;
(Ⅱ)设集合
,若集合
,求实数
的取值范围.
![](https://img.xkw.com/dksih/QBM/2014/1/22/1571501693059072/1571501698572288/STEM/74bdfa7765ce438abfd4e74b5b3d8c22.png)
![](https://img.xkw.com/dksih/QBM/2014/1/22/1571501693059072/1571501698572288/STEM/0605e7549fa94e8ea982b1e781643472.png)
![](https://img.xkw.com/dksih/QBM/2014/1/22/1571501693059072/1571501698572288/STEM/09af48e628574eeaadaf8772abba63d5.png)
![](https://img.xkw.com/dksih/QBM/2014/1/22/1571501693059072/1571501698572288/STEM/5540b611df5440778026582ecdc19638.png)
(Ⅰ)求集合
![](https://img.xkw.com/dksih/QBM/2014/1/22/1571501693059072/1571501698572288/STEM/35cb20b5bf824500b9ff208b00afe59b.png)
(Ⅱ)设集合
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4746ab7c70be99032269726b81089ecb.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/11d9db05ae0d7e541b574e7a749fe0da.png)
![](https://img.xkw.com/dksih/QBM/2014/1/22/1571501693059072/1571501698572288/STEM/7a15995aa5dd480997485e8ae0f5997d.png)
您最近一年使用:0次