已知集合![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4cfa8f446f35ba49e831c36f12768ec1.png)
(1)当
时,求出![](https://staticzujuan.xkw.com/quesimg/Upload/formula/eb651853e6b907bc03d78b0d2939d7cf.png)
;
(2)若
,求实数m的取值范围.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4cfa8f446f35ba49e831c36f12768ec1.png)
(1)当
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/cf0086b054ef120408acac806a1b1318.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/eb651853e6b907bc03d78b0d2939d7cf.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/8250496dff397b3e8778755a8fe5d31e.png)
(2)若
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/caf22d7d1a965bda25168a233fb6290c.png)
更新时间:2021-11-17 21:38:30
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解答题-问答题
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适中
(0.65)
解题方法
【推荐1】已知
,
,全集
.
(1)当
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和
;
(2)若
,求实数a的取值范围.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/44b2fe9fd90a0750685afb1a32605b32.png)
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![](https://staticzujuan.xkw.com/quesimg/Upload/formula/fc0dc8098ad6f31bdd87771ca9cfa33a.png)
(1)当
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/cf7b339246d52b29603d33c152f44de1.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/8fdbfa7a63fdf5717d40c8c9a73ec160.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b3744e71abf4b43e128eabea9181b712.png)
(2)若
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0b1cdbf475399382934603da3e999f50.png)
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适中
(0.65)
【推荐2】已知
,
.
(1)是否存在实数
,使
是
的充要条件?若存在,求出
的取值范围.
(2)是否存在实数
,使
是
的必要不充分条件?若存在,求出
的取值范围.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/04bdb675dfb41f8a0385279d9a1bf55c.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2951509a40c93ab088ef3c135fc1ef62.png)
(1)是否存在实数
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/294f5ba74cdf695fc9a8a8e52f421328.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/320a7c616f6f7207a0a38bb707ac2205.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/1c8647b00cc8c8f35555c7d78cf2812c.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/294f5ba74cdf695fc9a8a8e52f421328.png)
(2)是否存在实数
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/294f5ba74cdf695fc9a8a8e52f421328.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/320a7c616f6f7207a0a38bb707ac2205.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/1c8647b00cc8c8f35555c7d78cf2812c.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/294f5ba74cdf695fc9a8a8e52f421328.png)
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名校
【推荐3】已知全集为
,集合
,
(1)当
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;
(2)若
,求实数
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![](https://staticzujuan.xkw.com/quesimg/Upload/formula/cf3ed15aa3dcc4211fb520b5b942c989.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/aeeaeb8a1646f0f61d7c143511ec9264.png)
(1)当
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e65397f11ea8af736f38debadf420c4a.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/8fdbfa7a63fdf5717d40c8c9a73ec160.png)
(2)若
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/dd9d50619b779c1056602f46b2a95e90.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
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适中
(0.65)
名校
解题方法
【推荐1】已知全集
,集合
或
,
,
(1)求
、
;
(2)若集合
是集合A的子集,求实数k的取值范围.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0a64dc61989ca50b9ee19d835c4ed268.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/413bd2a93e650dea796f83476eb96df6.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5d2212ca63a0f4cac1086319559aa388.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/cfd06c6607d8845bfdb983f2ea338595.png)
(1)求
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/8fdbfa7a63fdf5717d40c8c9a73ec160.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/76e5450f24464d07f1a767714fa639cc.png)
(2)若集合
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ce02c1282e2306227e1144a60a085143.png)
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适中
(0.65)
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解题方法
【推荐2】已知集合
,
.
(1)当
时,求出
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(2)若“x∈A”是“x∈B”的必要不充分条件,求实数
的取值范围.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/16962e096a4a6a3f5d78fd328d81ba71.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d0ebaf484d8eca7b6445a31a988cf70d.png)
(1)当
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/cf0086b054ef120408acac806a1b1318.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7ba8578787a6b9068b5957d40e8925d9.png)
(2)若“x∈A”是“x∈B”的必要不充分条件,求实数
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/294f5ba74cdf695fc9a8a8e52f421328.png)
您最近一年使用:0次
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适中
(0.65)
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【推荐3】已知集合
,全集为
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![](https://img.xkw.com/dksih/QBM/2021/11/8/2847060000841728/2847822670716928/STEM/08d4066ad35d4fcab99d98b336371456.png?resizew=178)
(1)求集合
;
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![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c403d0728d234a0c2ab4c0ec7355ef9a.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4aa0df7f1e45f9de29e802c7f19a4f64.png)
![](https://img.xkw.com/dksih/QBM/2021/11/8/2847060000841728/2847822670716928/STEM/08d4066ad35d4fcab99d98b336371456.png?resizew=178)
(1)求集合
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b3744e71abf4b43e128eabea9181b712.png)
(2)求阴影部分表示的集合.
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