已知集合
,
.
(1)若
,求
;
(2)若
,求a的取值范围.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/71af2323c7c1a144af0a92040689cb04.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0db14ac19adadd96afc124b2abae80f7.png)
(1)若
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0b550ee821ee1838384835e81fc34b67.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/9dc1b64f5fc03e668c89df3f7e1ae7d0.png)
(2)若
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/6645ad088927971f8a8b60d951d93d1a.png)
更新时间:2022-11-02 10:19:07
|
相似题推荐
解答题-问答题
|
较易
(0.85)
名校
解题方法
【推荐1】已知
实数x满足集合
,
实数x满足集合
或
.
(1)若
,设全集
,求
;
(2)若
是
的充分不必要条件,求实数a的取值范围.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/51441c8788ff11be766766227793246d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d0c6745e18386f99415d3a842e5a7ffa.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/099c5d1a1147d763bc43cb4858ec80ab.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/6f3dc4c836b348482670a34ea4fa09a5.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b18d49782c83ea51587859d3c2bc216d.png)
(1)若
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/6b108ab31cc093f03cf48ad65429889e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0a64dc61989ca50b9ee19d835c4ed268.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7c12a5177d63b18a9d2cb7c83056543c.png)
(2)若
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b1010846eeec6c9da29640f5aa3f8738.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/9aa8a716a31b0f51b70fdf9bdb257909.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】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)
您最近一年使用:0次
解答题-问答题
|
较易
(0.85)
解题方法
【推荐1】已知全集
,集合
,
,求
.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0a64dc61989ca50b9ee19d835c4ed268.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/de490686466148b49216f8bc4e2346a5.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/470695a6aef744da44d3b903b11dafeb.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/322861985b5b7271b134b47f649e5a99.png)
您最近一年使用:0次
解答题-问答题
|
较易
(0.85)
解题方法
【推荐1】
时,求函数
的最小值
![](https://img.xkw.com/dksih/QBM/2015/12/1/1572327829463040/1572327835303936/STEM/ee5d1c688e024db28249441e3b1d16f3.png)
![](https://img.xkw.com/dksih/QBM/2015/12/1/1572327829463040/1572327835303936/STEM/42d210bc99794945bd5c2098e3abd213.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】已知函数
,求
在区间[0,1]上的最小值.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/3907a9ac8220e5b8c87d57cc083b18c4.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4fe7d5809da02c15a43a0e9a898b9086.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3】函数
,定义域为![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2fab11f38ab8593932082ec4d9c8c91f.png)
(1)当
时,求
的值域;
(2)若
恒成立,求实数
的取值范围
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/52365adf294a3a92fee082158ad674bc.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2fab11f38ab8593932082ec4d9c8c91f.png)
(1)当
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/8e258ab9e600435b37465092243d99f6.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/09f86f37ec8e15846bd731ab4fcdbacd.png)
(2)若
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/3e654db34f7c5cface3694bb6a095f0a.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0a6936d370d6a238a608ca56f87198de.png)
您最近一年使用:0次