已知集合
,
.
(1)当
时,求
;
(2)若
是
的必要不充分条件,求实数
的取值范围.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/8cf34786277a73c4d7f7813a5a002e37.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f3a846c2405c5f0823cbdd4f52aae548.png)
(1)当
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/fd876a2ed79c64bacc3e64b8ee92735e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/8fdbfa7a63fdf5717d40c8c9a73ec160.png)
(2)若
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e23af61cd402b3789af2401bde9cbefe.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/6ed006b944ea64f970fee46e2f558467.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/294f5ba74cdf695fc9a8a8e52f421328.png)
更新时间:2023-10-16 11:54:25
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【推荐1】已知命题
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【推荐2】已知集合
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![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5963abe8f421bd99a2aaa94831a951e9.png)
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【推荐1】已知集合
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![](https://img.xkw.com/dksih/QBM/2015/8/19/1572216189452288/1572216195121152/STEM/129578ba99284cedb13f945256a524f5.png)
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(1)求
![](https://img.xkw.com/dksih/QBM/2015/8/19/1572216189452288/1572216195121152/STEM/10a9c542f57a4746a07e84ec8e87395b.png)
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![](https://img.xkw.com/dksih/QBM/2015/8/19/1572216189452288/1572216195121152/STEM/162f01be350f4c0eb3939bce599b4489.png)
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![](https://staticzujuan.xkw.com/quesimg/Upload/formula/35c03d538533d9f54ac5ae9b8e5c7784.png)
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![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4c9c391d3e03cdf1401e8225b321d3ad.png)
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【推荐1】已知函数
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![](https://staticzujuan.xkw.com/quesimg/Upload/formula/6323f3d42a8c329f1231a4183cca21c3.png)
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![](https://staticzujuan.xkw.com/quesimg/Upload/formula/3e38fffbc7ab9882480f4faa72390e23.png)
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【推荐2】已知集合
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![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5963abe8f421bd99a2aaa94831a951e9.png)
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![](https://staticzujuan.xkw.com/quesimg/Upload/formula/cf0086b054ef120408acac806a1b1318.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/361048fd1b1a7f3b7230404a04b7155a.png)
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![](https://staticzujuan.xkw.com/quesimg/Upload/formula/fdbbe46a98a8fdebfc46fcbc45dc88e8.png)
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