1 . 已知集合
,集合
.
(1)当
时,求
;
(2)若“
”是“
”的充分不必要条件,求实数
的取值范围.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/eb27daa9d42d9d9cbd6e2435a32fc88a.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/9bdc7807b7d2d7eb06ac5f801a9cd250.png)
(1)当
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0b550ee821ee1838384835e81fc34b67.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b3744e71abf4b43e128eabea9181b712.png)
(2)若“
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/6ed006b944ea64f970fee46e2f558467.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e23af61cd402b3789af2401bde9cbefe.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0a6936d370d6a238a608ca56f87198de.png)
您最近一年使用:0次
解题方法
2 . 已知
.
(1)若
恒成立,求实数
的取值范围;
(2)求不等式
的解集.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ef2eb4185432994d8037ef5b05a6009a.png)
(1)若
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f8d82dfe592d2d24a9f5ee6b219ca89f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0a6936d370d6a238a608ca56f87198de.png)
(2)求不等式
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/1c73a98c1b3504e09bfbe0db849b0d24.png)
您最近一年使用:0次
解题方法
3 . 已知集合
,
,则
( )
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/615c827bca7ecf586eea5a38f698fd84.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b1dffeceae630307e1270d8664379c80.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b4b9b470218359a4a47be9244980489e.png)
A.![]() | B.![]() | C.![]() | D.![]() |
您最近一年使用:0次
解题方法
4 . 已知
.
(1)若
为奇函数,求
的值,并解方程
;
(2)解关于
的不等式
.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2929db6d85ea3929b84c4bbbf29851b4.png)
(1)若
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4fe7d5809da02c15a43a0e9a898b9086.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0a6936d370d6a238a608ca56f87198de.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0c30fd1a9da889807c0baf0fd393b859.png)
(2)解关于
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/81dea63b8ce3e51adf66cf7b9982a248.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2ea66f17c454ff99dd986daff59e1513.png)
您最近一年使用:0次
5 . 已知集合
.
(1)求集合
;
(2)求
.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f3d61312ad15eb7632c3396122d856eb.png)
(1)求集合
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5963abe8f421bd99a2aaa94831a951e9.png)
(2)求
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a964b99d839b459f7f14af1d512edcf4.png)
您最近一年使用:0次
6 . 解下列不等式;
(1)
;
(2)
;
(3)
;
(4)
.
(1)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d72d56f18dcf897a0dc75f5c48700096.png)
(2)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/1c4a655be2d2c7092f0cdf9de848d80c.png)
(3)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/6b5fd1241f14cc1b359b978f32144f0a.png)
(4)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/fb286afc442f165009917b8b6dc14820.png)
您最近一年使用:0次
解题方法
7 . 已知函数
,若
,则实数a的取值范围为__________ .
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/91e531d7338718be2b8bc22fe425abdf.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/708171a29b65c484ff7c9bcf97364b2d.png)
您最近一年使用:0次
名校
8 . 已知函数
.
(1)若
,求关于x的不等式
的解集;
(2)若
,且方程
有两个不相等的负根,求实数b的取值范围.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c75d0c3b10fd1890e1afcd9886c73b99.png)
(1)若
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5a3c442579603164f3fc19458677d307.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/1c73a98c1b3504e09bfbe0db849b0d24.png)
(2)若
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ef2635c6e599f816c706e471a3c197d5.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/cc478be171c125e452496ae2bf4ccb3c.png)
您最近一年使用:0次
9 . 不等式
的解集是______ .
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7aa3f9864bb027c49c7dfb99dbaa763c.png)
您最近一年使用:0次
10 . 解下列关于x的不等式:
(1)
;
(2)
.
(1)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e011b337fdb8459ca5006b772136c039.png)
(2)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7e0fe43a39be19a3b29b2668bf01374e.png)
您最近一年使用:0次