已知集合
.
(1)求
;
(2)若
,求
的取值范围.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/cadf39b95c65ace7cf61afec7367919b.png)
(1)求
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/6d237dfe6689ca7a769a5d1d7b3b8529.png)
(2)若
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/21f7fa28320f9752cb83fb3540edd7ce.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0a6936d370d6a238a608ca56f87198de.png)
更新时间:2018-01-07 16:45:27
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解答题-问答题
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适中
(0.65)
名校
解题方法
【推荐1】在①
;②
,这两个条件中任选一个,补充到本题第(2)问的横线处,求解下列问题.
问题:已知集合
.
(1)当
时,求
和
;
(2)若______,求实数
的取值范围.
注:如果选择多个条件分别解答,按第一个解答计分.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/dd9d50619b779c1056602f46b2a95e90.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/dea9a4259cca10c1f5af28e621ebafd6.png)
问题:已知集合
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/8f9bf8ed7aad07f3cc8dc1843d1ce5ab.png)
(1)当
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/8e258ab9e600435b37465092243d99f6.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b3744e71abf4b43e128eabea9181b712.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/8fdbfa7a63fdf5717d40c8c9a73ec160.png)
(2)若______,求实数
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0a6936d370d6a238a608ca56f87198de.png)
注:如果选择多个条件分别解答,按第一个解答计分.
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解答题-问答题
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适中
(0.65)
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解题方法
【推荐2】已知
,
.
(1)若
时,求
,
;
(2)是否存在a值使
是
成立的充分不必要条件,若存在求出a的取值范围,不存在说明理由.
(3)若
,求a的取值范围.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a3cdb0f0857f6e7480096a3645b6aca7.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/47492deca35a820623067e465e1042cc.png)
(1)若
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e65397f11ea8af736f38debadf420c4a.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/8fdbfa7a63fdf5717d40c8c9a73ec160.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/318212b9ba5866ba3fd6f4327526443f.png)
(2)是否存在a值使
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/6ed006b944ea64f970fee46e2f558467.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e23af61cd402b3789af2401bde9cbefe.png)
(3)若
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2a4753cb6284ad882864ec4cccfcf158.png)
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解答题-问答题
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适中
(0.65)
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【推荐1】已知全集
,非空集合
.
(1)当
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(2)命题
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是
的必要条件,求实数
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![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0a64dc61989ca50b9ee19d835c4ed268.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a8b947e527e77d19e96f9ba9f41effd9.png)
(1)当
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/200f24e682c93e02a87f3f9d57dc5d40.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7c5aad14709bc1c2cc706ca6bc3934d4.png)
(2)命题
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/3fa3ce35f134bf2d3ede948a90653247.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0b4392609f63fcb931c45d779be927a1.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/9aa8a716a31b0f51b70fdf9bdb257909.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b1010846eeec6c9da29640f5aa3f8738.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
【推荐2】已知集合
.
(1)求集合
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;
(2)若集合
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![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f4ea5eefa6cf86a9c67a833daad7c003.png)
(1)求集合
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/8fdbfa7a63fdf5717d40c8c9a73ec160.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/6948aba16a8c738e754d1ce13f13cb80.png)
(2)若集合
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/15fa951ffbaa45d74594369c71e98332.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2ffaef44a58c96b73b6ba49c1ebaecca.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/294f5ba74cdf695fc9a8a8e52f421328.png)
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