解题方法
1 . (1)已知函数
的定义域为
,求函数
的定义域;
(2)已知函数
的定义域为
,求函数
的定义域;
(3)已知函数
的定义域为
,求函数
定义域.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/09f86f37ec8e15846bd731ab4fcdbacd.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b372aef3938a81812010c8a78cf5e111.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/418accab7b0e6e9418d725130ee5bf70.png)
(2)已知函数
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/418accab7b0e6e9418d725130ee5bf70.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b372aef3938a81812010c8a78cf5e111.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/09f86f37ec8e15846bd731ab4fcdbacd.png)
(3)已知函数
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/418accab7b0e6e9418d725130ee5bf70.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b372aef3938a81812010c8a78cf5e111.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f25990e1d373ac30d7480633e47cc1ef.png)
您最近一年使用:0次
解题方法
2 . 已知全集为实数集R,集合
,
.
求
,
;
已知集合
,若
,求实数a的取值范围.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5ecff0ad29f92f2c3d18a5a576ca3180.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f842d921d8af1858fe8db245c7e94511.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4141b26d2c32655003494a91ad6331b5.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/06cfe33e358e7b7a18842a9a2bc9d119.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/31d8a7acad793ece52c78eb7fed481c6.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/65863c1abad833b79c303bfca24f535c.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ed1962531fea85e6c6e3e8cf909fb8e6.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f937fbefe53d8db8388dbe59e2aeb6c0.png)
您最近一年使用:0次
2017-02-08更新
|
393次组卷
|
4卷引用:【校级联考】安徽省芜湖市四校联考2018-2019学年高一上学期期末考试数学试题
名校
3 . 对于函数
,解答下述问题:
(1)若函数的定义域为
,求实数
的取值范围;
(2)若函数的值域为
,求实数
的值.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/dece23b74b739edcfd484f53f8c43570.png)
(1)若函数的定义域为
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/cf3ed15aa3dcc4211fb520b5b942c989.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0a6936d370d6a238a608ca56f87198de.png)
(2)若函数的值域为
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d2eed08bbcd616e01cae098cd4013a78.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0a6936d370d6a238a608ca56f87198de.png)
您最近一年使用:0次
2016-12-03更新
|
681次组卷
|
3卷引用:2015-2016学年安徽省蚌埠市二中高一上学期期中数学试卷
名校
解题方法
4 . 设命题
:方程
无实数根;命题
:函数
的定义域是
.如果命题
或
为真命题,求实数
的取值范围.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b1010846eeec6c9da29640f5aa3f8738.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/bf238e780656724b21940084e2f4f283.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/9aa8a716a31b0f51b70fdf9bdb257909.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c47039c1ea74f2bb20556599e3213bd4.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4aa0df7f1e45f9de29e802c7f19a4f64.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b1010846eeec6c9da29640f5aa3f8738.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/9aa8a716a31b0f51b70fdf9bdb257909.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0a6936d370d6a238a608ca56f87198de.png)
您最近一年使用:0次
2016-12-03更新
|
419次组卷
|
2卷引用:2014-2015学年安徽省涡阳县四中高二下学期第二次质检文科数学试卷