已知全集
,
,
.求集合
,
,
.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0a64dc61989ca50b9ee19d835c4ed268.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c5bb2127d2e178bef5bdb05abb9a7644.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/640c075e54c17299ac352701321c6b0e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/8fdbfa7a63fdf5717d40c8c9a73ec160.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c093cbde3d3472d1f7f2b0dff2bc4881.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/1f7f860e8f0503c476eaf0bd73a71810.png)
更新时间:2022-03-30 08:33:29
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解答题-问答题
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【推荐1】已知集合![](https://img.xkw.com/dksih/QBM/2016/2/24/1572496155541504/1572496161603584/STEM/a3ab5b599f294673b6aea7816e8f2b19.png)
.
(1)当
时,求
;
(2)求使
的实数
的取值范围.
![](https://img.xkw.com/dksih/QBM/2016/2/24/1572496155541504/1572496161603584/STEM/a3ab5b599f294673b6aea7816e8f2b19.png)
![](https://img.xkw.com/dksih/QBM/2016/2/24/1572496155541504/1572496161603584/STEM/e1060467e9804c3296f27ef20c96d2c1.png)
(1)当
![](https://img.xkw.com/dksih/QBM/2016/2/24/1572496155541504/1572496161603584/STEM/9d22da70dc5c47f3bf45cfb71119b60a.png)
![](https://img.xkw.com/dksih/QBM/2016/2/24/1572496155541504/1572496161603584/STEM/60111ab393a14154acb46591f3bffeb2.png)
(2)求使
![](https://img.xkw.com/dksih/QBM/2016/2/24/1572496155541504/1572496161603584/STEM/b3016a78942c46dca6a450b72f3d4f9c.png)
![](https://img.xkw.com/dksih/QBM/2016/2/24/1572496155541504/1572496161603584/STEM/842a040448e14925b2f187343891872a.png)
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【推荐2】(1) 若合A={y|y=x2-2x+3, x∈R}, B={y|y=-x2+2x+10, x∈R},求A∩B.
(2)若集合A={(x, y)|y=x+1, x∈R}, B=
,求A∩B.
(2)若集合A={(x, y)|y=x+1, x∈R}, B=
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/11e8e8a1dcde8517f4a9535b4985f925.png)
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【推荐1】已知全集
,集合
.
(1)求
;
(2)若集合
,且
,求实数
的取值范围.
![](https://img.xkw.com/dksih/QBM/2016/11/24/1573170643705856/1573170649899008/STEM/3bde7f1756224a8fabdb9997dde83557.png)
![](https://img.xkw.com/dksih/QBM/2016/11/24/1573170643705856/1573170649899008/STEM/0c69867bc5984558b664da6f48b83853.png)
(1)求
![](https://img.xkw.com/dksih/QBM/2016/11/24/1573170643705856/1573170649899008/STEM/d5e08100150a4b659c2164293cf5ff9d.png)
(2)若集合
![](https://img.xkw.com/dksih/QBM/2016/11/24/1573170643705856/1573170649899008/STEM/6f769859b1eb4834b19ef4d2a15ef6ab.png)
![](https://img.xkw.com/dksih/QBM/2016/11/24/1573170643705856/1573170649899008/STEM/d50baf27024047f0882521a52f5da21d.png)
![](https://img.xkw.com/dksih/QBM/2016/11/24/1573170643705856/1573170649899008/STEM/a4acd3598e814b1cb711d1ccf75e438c.png)
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解题方法
【推荐2】设全集为R,
,
,求
,
以及
.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/eea6cd440724a3059db805bc5238389e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/95978a248d08ba6781b7c70e61b9af7b.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b3744e71abf4b43e128eabea9181b712.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/8fdbfa7a63fdf5717d40c8c9a73ec160.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d89504e77251a53877e41b64cb5c943d.png)
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名校
解题方法
【推荐1】已知集合
,
求①
②
③
④
(请画出数轴表示)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/376204b5755743ecf15692592e06bbec.png)
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【推荐2】设全集为
,集合
或
,
.
(1)求
,
;
(2)已知
,若
,求实数
的取值范围.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/cf3ed15aa3dcc4211fb520b5b942c989.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7ef921930c63a94d4febfb21c21d9778.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/45cf5ab959efb5b142e21ccfb3182964.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/299e92ea29fe6ef596fa11baa07dd59d.png)
(1)求
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b3744e71abf4b43e128eabea9181b712.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/cfb17a2a90cd479b604258d1258e9636.png)
(2)已知
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/08f870cc904c2bb339df1e9927db8ef0.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e544b1304a6bbc87283cf741f134cebe.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0a6936d370d6a238a608ca56f87198de.png)
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【推荐2】已知条件
或
和条件
,请选取适当的非负数
的值,分别利用所给的两个条件作为
构造命题:“若
,则
”,并使得构造的原命题为真命题,而其逆命题为假命题,则这样的一个原命题可以是什么?并说明为什么这一命题是符合要求的命题.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/38c7b039477f025297e24aa0517bf5be.png)
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![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0a6936d370d6a238a608ca56f87198de.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/01c74a907dda6bb7d9d56d009d9df253.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5963abe8f421bd99a2aaa94831a951e9.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7f9e8449aad35c5d840a3395ea86df6d.png)
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