设集合
.
(1)若
,求实数
的值;
(2)若
,求实数
的取值集合.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d4705019c7e3384c55df8eb072d3e5a5.png)
(1)若
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ba0218693a009f8dcdf8483d1c51176a.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0a6936d370d6a238a608ca56f87198de.png)
(2)若
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/caf22d7d1a965bda25168a233fb6290c.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0a6936d370d6a238a608ca56f87198de.png)
更新时间:2019-05-16 17:38:39
|
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解答题-问答题
|
较易
(0.85)
解题方法
【推荐1】已知集合
,
,且
,求实数
的取值范围.
![](https://img.xkw.com/dksih/QBM/2011/11/10/1570347418091520/1570347423457280/STEM/ab3e0ddc3354498caf36384afcfa8bba.png)
![](https://img.xkw.com/dksih/QBM/2011/11/10/1570347418091520/1570347423457280/STEM/7c6ff7bb16774e43a1bff91002e09ff7.png)
![](https://img.xkw.com/dksih/QBM/2011/11/10/1570347418091520/1570347423457280/STEM/44b5f638a23a401dbaf8ae37cde57bc0.png)
![](https://img.xkw.com/dksih/QBM/2011/11/10/1570347418091520/1570347423457280/STEM/13b526ae489d4cbead0e7f1ee07948cc.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:在①
;②“
”是“
”的充分不必要条件;③
这三个条件中任选一个,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
;
(2)若_______,求实数
的取值范围.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/dd9d50619b779c1056602f46b2a95e90.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/6ed006b944ea64f970fee46e2f558467.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e23af61cd402b3789af2401bde9cbefe.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/dea9a4259cca10c1f5af28e621ebafd6.png)
问题:已知集合
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/33bd543479d20df7c161118321399df7.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d6bc9b7a5569a65e9e58f911b5554844.png)
(1)当
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/bb8e1dd8da540badcb9a8f427c5b202e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/8fdbfa7a63fdf5717d40c8c9a73ec160.png)
(2)若_______,求实数
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0a6936d370d6a238a608ca56f87198de.png)
您最近一年使用:0次