名校
解题方法
1 . 求解下列问题
(1)已知集合
,定义
且
.求
;
(2)已知非空集合
,集合
. 命题
:
,命题
:
,若
是
的充分条件,求实数
的取值范围.
(1)已知集合
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2ff76465d9f1d5bee8ae7ecb9004ce91.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/999eb23bfe83dbac2fcad936332bf3f3.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/09bb7c317f907cd7fda5ae49b24f2d41.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/06430886275f5ad62bcda62fce691e99.png)
(2)已知非空集合
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/60e80c19da6871a3001d212b8aee84e7.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/fcf64245e344132923129086347bd03a.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b1010846eeec6c9da29640f5aa3f8738.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/6ed006b944ea64f970fee46e2f558467.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/9aa8a716a31b0f51b70fdf9bdb257909.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e23af61cd402b3789af2401bde9cbefe.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)
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