已知全集为实数集
,集合
,非空集合
.
(1)当
时,求
,
;
(2)若
,求实数
的取值范围.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4aa0df7f1e45f9de29e802c7f19a4f64.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/32fff13cb2756fa1b3bc6e2e01e51eb9.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/85de7a9641f57ef1fcbb2dc52cad8f54.png)
(1)当
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/8e258ab9e600435b37465092243d99f6.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/8fdbfa7a63fdf5717d40c8c9a73ec160.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/18021430ce31ef49a6c54ebee927e8c9.png)
(2)若
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/04ceb1f338fa60976229d7ec6531b626.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0a6936d370d6a238a608ca56f87198de.png)
更新时间:2021-11-23 14:24:21
|
相似题推荐
解答题-问答题
|
较易
(0.85)
解题方法
【推荐1】已知集合
或
,若
,求a的取值范围.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d12c1d148167cfd45f171d516fb2c297.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/28cdbf4bef583116fc1cf3ce0ee09f58.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/dea9a4259cca10c1f5af28e621ebafd6.png)
您最近一年使用:0次
解答题-问答题
|
较易
(0.85)
名校
解题方法
【推荐2】设集合
,
,
.
(1)若
,求实数
的值;
(2)若
且
,求实数
的值.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d99a4a3f2cea8576bd1c5259dadf95c1.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/11c8b2ff6eb65276a49a058a7942a7d4.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/30adc9a65ee9d63e05041908a98e9269.png)
(1)若
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0d863dc7fbb5ef32811354df8f0be5c3.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0a6936d370d6a238a608ca56f87198de.png)
(2)若
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/9a837165ca03f9e4ea8964979c95e3bb.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/3846a59e71d1aba0909dc4452aeed8e1.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c29cd450d0feaea9acb27a60430f4a3c.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0a6936d370d6a238a608ca56f87198de.png)
您最近一年使用:0次
解答题-问答题
|
较易
(0.85)
名校
解题方法
【推荐1】已知全集
,集合
,
.
(Ⅰ)求
;
(Ⅱ)设非空集合
,若
,求实数
的取值范围.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/fc0dc8098ad6f31bdd87771ca9cfa33a.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/188791535098a44dcdea38cd18d79ba3.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b51d7a3e667adea34e70ef0ff32968be.png)
(Ⅰ)求
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b109e426e848c161a79366657ca264dc.png)
(Ⅱ)设非空集合
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ed06ea447e02ef433af60228ed76b633.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/1f19188befa38b059795589934190eec.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0a6936d370d6a238a608ca56f87198de.png)
您最近一年使用:0次
解答题-证明题
|
较易
(0.85)
解题方法
【推荐1】已知二次函数
.
(1)若
,设方程
的两根为
、
,求
;
(2)若
,求使
成立的
的集合;
(3)求证:函数
有两个零点.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/66fbc72bb9a483f54545ca8a73a82c45.png)
(1)若
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/3b4d795709b0abcf47bceec2250f2f9b.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/86b92b70365c63607daecdc8deb73ecf.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/20fef976a0230bdfe3bc758e93987ba8.png)
(2)若
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/8e258ab9e600435b37465092243d99f6.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/1c73a98c1b3504e09bfbe0db849b0d24.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/81dea63b8ce3e51adf66cf7b9982a248.png)
(3)求证:函数
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/09f86f37ec8e15846bd731ab4fcdbacd.png)
您最近一年使用:0次