设集合
,集合
,则![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b4b9b470218359a4a47be9244980489e.png)
________ .
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/8c14a4101f6905a5ccae97be3a1454d5.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e792e2794946cad6730ab90b79c94884.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b4b9b470218359a4a47be9244980489e.png)
更新时间:2019-12-16 09:32:05
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相似题推荐
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适中
(0.65)
【推荐1】对于非空实数集
,定义
.设非空实数集
.现给出以下命题:
(1)对于任意给定符合题设条件的集合
,必有
;
(2)对于任意给定符合题设条件的集合
,必有
;
(3)对于任意给定符合题设条件的集合
,必有
;
(4)对于任意给定符合题设条件的集
,必存在常数
,使得对任意的
,恒有
.
以上命题正确的是_____________ .
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5963abe8f421bd99a2aaa94831a951e9.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/247e9c1c300ae341e9c02c7db92f41c5.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/366749e18358402f70feb02785251caf.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/cabfdb27f2d2870b5bb40129f81bc255.png)
(1)对于任意给定符合题设条件的集合
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/39acab3cfb59bfc9591371721ab01d93.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e2792afeb30c2254d0c1c306253158ec.png)
(2)对于任意给定符合题设条件的集合
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/39acab3cfb59bfc9591371721ab01d93.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/653217ebc63b0982c9ad9b56aaa9bd55.png)
(3)对于任意给定符合题设条件的集合
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/39acab3cfb59bfc9591371721ab01d93.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/17a6a9a9f28d58c0b82998f6c86d500d.png)
(4)对于任意给定符合题设条件的集
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/39acab3cfb59bfc9591371721ab01d93.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0a6936d370d6a238a608ca56f87198de.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/cf881ff2a57c5e732fd48b5cbd39540c.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d9d533752b00dfce3f24e4647be9dfd3.png)
以上命题正确的是
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解题方法
【推荐2】在直角坐标平面
中,已知两定点
与
位于动直线l:
的同侧,设集合
点
与点
到直线l的距离之差等于
,
,记
,
,则由T中的所有点所组成的图形的面积是__________
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7ee31829d0d4d5f779a957d7df8058ab.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5e4e568d9cd57c442f011a787ab8aaf2.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/914c2124260496e9307d6448c0c943f0.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/50f6e1f67dc15c3cf135a78af95c70fe.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/8a0965375026aea060c264d6f9f29146.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f5076289823db419f94e9c0c8f4aafd9.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a3fb78c5f885034612c0e030b920143d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/db31d12bfc5edb04afd71985a4d7943a.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/3e4be28d315790b651d1a2c942debedd.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7837cdf68108e1322ca24d66d1a9d252.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/715971a886eca913becd3d3dc6185569.png)
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【推荐1】设
:实数
满足
,
:实数
满足
.当
时,若
是
的必要条件,则实数
的取值范围是___________ .
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b1010846eeec6c9da29640f5aa3f8738.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/81dea63b8ce3e51adf66cf7b9982a248.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4e214ee67f5ab6252520118d1c718b3a.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/9aa8a716a31b0f51b70fdf9bdb257909.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/81dea63b8ce3e51adf66cf7b9982a248.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/6508d957c83a5ae54f2754a1fbab4f6e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/9e10e1c43b86a8cd4360ca9b57232164.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b1010846eeec6c9da29640f5aa3f8738.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/9aa8a716a31b0f51b70fdf9bdb257909.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0a6936d370d6a238a608ca56f87198de.png)
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【推荐1】已知函数
,设a∈R,若关于x的不等式
在
上恒成立,则a的取值范围是________________
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/588bc133df6afc6762af38d7b5d9cb59.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/dbf16a2449740668966a67ab1c00d1e6.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4aa0df7f1e45f9de29e802c7f19a4f64.png)
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