已知
,
,且满足
,求实数a的取值范围.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/dfb209f0044a2355d056249b2d5ac92c.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/11c8b2ff6eb65276a49a058a7942a7d4.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/dd9d50619b779c1056602f46b2a95e90.png)
更新时间:2023-10-20 23:06:12
|
【知识点】 根据并集结果求集合或参数解读
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解答题-问答题
|
适中
(0.65)
解题方法
【推荐1】集合
,
,若
,求实数
的取值范围.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/97927627b6890964c516f02dc34ed2f5.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/25098b3cd0a358cdedccb45736935c12.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/fdbbe46a98a8fdebfc46fcbc45dc88e8.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
|
适中
(0.65)
【推荐2】(1)设集合
,集合
,且
,求实数
的值;
(2)已知集合
,
,求实数
的值.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ba222b0343f88b332e050a9810181297.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4088fcba48d91dff45b1b7de00dd00d8.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/585d93b60d6451e76b882ffa0345dd89.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0a6936d370d6a238a608ca56f87198de.png)
(2)已知集合
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/af1ca747bb632eeaa28cb611d1b3291b.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d46f17be50109ee4bd3a66de7220554d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/14c5fe8a9ad42e52a8a40242865c6752.png)
您最近一年使用:0次