已知集合
,
,
(1)若
,求
;
(2)若
,求a的取值范围.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/411257edafbd8e721d5c9b4641d508f7.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7dd68167d90a6b187f58b42b32617631.png)
(1)若
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/3b4d795709b0abcf47bceec2250f2f9b.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c81919684bc4047d376c7e57dc6c8f1c.png)
(2)若
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/3e8813467f33f8611afd8efc477bf168.png)
更新时间:2023-12-23 00:43:18
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相似题推荐
解答题-问答题
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【推荐1】已知集合
,
.
(1)求
;
(2)求
;
(3)定义
,求
.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/34b698dd6977b97fc4e4a2eac12a766b.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/474e5435ef924a3589f62506ba81af4d.png)
(1)求
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/8fdbfa7a63fdf5717d40c8c9a73ec160.png)
(2)求
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/126fdf5a6e9b2d7c23d57798318da453.png)
(3)定义
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e41c4340086df355ae6f6b932161951d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5e9e460c144f7a2141d2df0308b125f2.png)
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【推荐2】在①
;②“
”是“
”的充分条件:③“
”是“
”的必要条件,在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.
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/6ed006b944ea64f970fee46e2f558467.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e23af61cd402b3789af2401bde9cbefe.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/3e8723f62855096c7012bd3f724167e0.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b9dccb0f3cdcca85ed41ca903d5b9d0d.png)
问题:已知集合
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/34df97163eefdee25468d23847c79cc6.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/79ecf17ba80c2e09d22d3fb944081a21.png)
(1)当
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/8e258ab9e600435b37465092243d99f6.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.
您最近一年使用:0次
解答题-问答题
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较易
(0.85)
【推荐1】已知集合
,
.
(1)若
,求
;
(2)若
,求
的取值范围.
![](https://img.xkw.com/dksih/QBM/2016/1/25/1572465649549312/1572465655439360/STEM/09948f8d4c554d959dec75b07241eb2e.png)
![](https://img.xkw.com/dksih/QBM/2016/1/25/1572465649549312/1572465655439360/STEM/dd179c0a189147aca33803c37b3e5637.png)
(1)若
![](https://img.xkw.com/dksih/QBM/2016/1/25/1572465649549312/1572465655439360/STEM/e5a75f97b9f54c4d8fc1b178ad5f96b4.png)
![](https://img.xkw.com/dksih/QBM/2016/1/25/1572465649549312/1572465655439360/STEM/a5d96c2035dd44a7b5c2241a5e9d81aa.png)
(2)若
![](https://img.xkw.com/dksih/QBM/2016/1/25/1572465649549312/1572465655439360/STEM/9ca660e24990410e928780bc0da134d7.png)
![](https://img.xkw.com/dksih/QBM/2016/1/25/1572465649549312/1572465655439360/STEM/a4d2a5e875224da88550f996b0121c98.png)
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【推荐2】设全集为
,集合
.
(1)求
及
;
(2)若集合
,且
,求实数
的取值范围.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a43b2faa4f81f32d94612dce724e772b.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/9087926f1c628fae0174baac089a8611.png)
(1)求
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e9d19598537de95fa02534b1e9b467d1.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/94b0cbfbb7f9547c3bdcc8356d456935.png)
(2)若集合
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e7562f0eb24db77931f9a903be97111d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d2bed4f3b7d72db3b022165360678e8d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/294f5ba74cdf695fc9a8a8e52f421328.png)
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【推荐2】(1)已知正实数
,
满足等式
,求
的最小值;
(2)已知
,
,
,则
的最小值.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/81dea63b8ce3e51adf66cf7b9982a248.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d053b14c8588eee2acbbe44fc37a6886.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7b4a74d6028edb14fd120a348bd5276d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/43895441ab985675e2facdedf18575dc.png)
(2)已知
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/08115d6d9f876dea921a4d32260ff1fb.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/061813f1ec633c5c4c393c4de7938322.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e4039f0c88e9d05283993711a57e153a.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/1cf99adccc80f28343fedd8d0aad7429.png)
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