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1 . 若集合
,
,则“
”是“
”的( )
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/92e25c26af80fbe87e19b263a1e8d26b.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a1b4fd3624fdf14466626295da631517.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b05cac8a8949fae95b195425ce890947.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/caf22d7d1a965bda25168a233fb6290c.png)
A.充分非必要条件 | B.必要非充分条件 |
C.充要条件 | D.既非充分又不必要条件 |
您最近一年使用:0次
2019-11-15更新
|
1910次组卷
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12卷引用:上海市建平中学2019-2020学年高一上学期期中数学试题
上海市建平中学2019-2020学年高一上学期期中数学试题(已下线)2019年上海市华东师范大学第二附属中学高三模拟(三模)数学试题(已下线)2019年上海市华东师范大学第二附属中学高三模拟数学试题(已下线)2019高考热点题型和提分秘籍 【理数】专题2 命题及其关系、充分条件与必要条件( 题型专练)(已下线)2019高考热点题型和提分秘籍 【文数】专题2 命题及其关系、充分条件与必要条件 (题型专练)2019年山西省忻州市静乐县高三下学期6月月考数学试题黑龙江省双鸭山市第一中学2017-2018学年高二下学期开学考试数学(理)试题安徽省安庆市怀宁县第二中学2018-2019学年高三上学期第四次月考数学(文)试题山西省师院附中、师苑中学2020-2021学年高一上学期第一次月考数学试题河南省新乡市辉县市第一高级中学2020-2021学年高二下学期第一次阶段性考试数学(文)试题(已下线)考点53 不等式选讲-备战2022年高考数学(理)一轮复习考点帮广西陆川县中学2016-2017学年高二下学期知识竞赛数学(理)试题
2 . 设函数
,
为坐标原点,
为函数
图像上横坐标为
的点,向量
与向量
的夹角为
,则满足:
的最大整数
的值为______ .
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/6ad1f283b329be3491ac1e34a258133c.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/1dde8112e8eb968fd042418dd632759e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d3cfeacc29e6a61c5b3b4e439c0a91df.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/942c2141d01bde6b48210c56a17fc75e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/098afe75dd67aa4c2d1f0b6616c4c1ca.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/22034385f3c155410cc757c7f2618fc3.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e686df657989b497adb0bc34e36f1ac5.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/92ffa8be5a02790c6161c56b8e90db64.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e050c39e56c7ea0e84e9e543f29b229e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b6a24198bd04c29321ae5dc5a28fe421.png)
您最近一年使用:0次
2019-11-14更新
|
204次组卷
|
2卷引用:上海市浦东新区建平中学2018-2019学年高三上学期开学考试数学试题
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3 . 已知数列
的通项公式为
,那么满足
的整数k的个数为______ .
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/83cf38189d5cbf627d2b82ac0eb76006.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a18fd5a793768b36695ca5bee5472ca5.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/81ac81c3ae67c2ac7ab17d82c705512a.png)
您最近一年使用:0次
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4 . 已知函数
,若对任意的
,都存在唯一的
,满足
,则实数a的取值范围为______________ .
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f353d4509309a428834daa4a3e718837.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a5468586f5f1cdca107ad738e99cec3d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/019d95d268dc148b3eacfa699a006aad.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/859458471c86ae39e0cc42d2d960d03e.png)
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2019-11-14更新
|
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6卷引用:上海市浦东新区2019届高三一模数学试题
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5 . 对在直角坐标系的第一象限内的任意两点
,
作如下定义:
,那么称点
是点
的“上位点”,同时点
是点
的“下位点”.
(1)试写出点
的一个“上位点”坐标和一个“下位点”坐标;
(2)设
、
、
、
均为正数,且点
是点
的上位点,请判断点
是否既是点
的“下位点”又是点
的“上位点”,如果是请证明,如果不是请说明理由;
(3)设正整数
满足以下条件:对任意实数
,总存在
,使得点
既是点
的“下位点”,又是点
的“上位点”,求正整数
的最小值.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4562f3225c98cf5cb11b47d98c9cc9c3.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b807b9b8da58da1b6778865efccb01b0.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/6b2356786e0b902deee0fac769f27dac.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4562f3225c98cf5cb11b47d98c9cc9c3.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b807b9b8da58da1b6778865efccb01b0.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b807b9b8da58da1b6778865efccb01b0.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4562f3225c98cf5cb11b47d98c9cc9c3.png)
(1)试写出点
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/1c39c16d3c056a9627afbc9501e3f8b1.png)
(2)设
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0a6936d370d6a238a608ca56f87198de.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2c94bb12cee76221e13f9ef955b0aab1.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/071a7e733d466949ac935b4b8ee8d183.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5c02bc0c74292b1e8f395f90935d3174.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4562f3225c98cf5cb11b47d98c9cc9c3.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b807b9b8da58da1b6778865efccb01b0.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4c0895f241bb91f0a8aecbaebfdc7d93.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4562f3225c98cf5cb11b47d98c9cc9c3.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b807b9b8da58da1b6778865efccb01b0.png)
(3)设正整数
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b6a24198bd04c29321ae5dc5a28fe421.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/8e70003a35025575e3d1838559e4650e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/31e36bff57bcfa86432b340e25e51d42.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5ceb955cff0a243b938fe2d2d1e8a5dc.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/3c3211e04504f70f90b06a544c6b396b.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/cb08794a404c650da28994c0c029ffe4.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b6a24198bd04c29321ae5dc5a28fe421.png)
您最近一年使用:0次
2019-11-13更新
|
563次组卷
|
3卷引用:上海市南汇中学2019-2020学年高一上学期十月考试数学试题
上海市南汇中学2019-2020学年高一上学期十月考试数学试题江西省上饶市2019-2020学年高二上学期期末数学(理)试题(已下线)2.1等式性质与不等式性质-2021-2022学年高一数学同步辅导讲义与检测(人教A版2019必修第一册)
名校
6 . 若关于
的不等式
的解集为
,
的解集为
.
(1)试求
和
;
(2)是否存在实数
,使得
?若存在,求
的范围;若不存在,说明理由.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/81dea63b8ce3e51adf66cf7b9982a248.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/374d5551b9e7ca9734d0d13301d8001a.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5963abe8f421bd99a2aaa94831a951e9.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/702d9438cd5abb9efc10b661d8732882.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7f9e8449aad35c5d840a3395ea86df6d.png)
(1)试求
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5963abe8f421bd99a2aaa94831a951e9.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7f9e8449aad35c5d840a3395ea86df6d.png)
(2)是否存在实数
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0a6936d370d6a238a608ca56f87198de.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/95321d0e551daa25104d32157249c23d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0a6936d370d6a238a608ca56f87198de.png)
您最近一年使用:0次
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7 . 设
、
且
,比较两数
与
的大小.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/81dea63b8ce3e51adf66cf7b9982a248.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/54dad48527a47eab4a5916ab0421cc71.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2b21208364124b5c477b2ff8df1c2e8f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/059d6df06a5b85848dc4fa33327f8e07.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/da962b9b5bc2c32b7a88b6969dccdc84.png)
您最近一年使用:0次
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8 . 设
、
是非空集合,定义
且
,若
,
,则
等于
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5963abe8f421bd99a2aaa94831a951e9.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7f9e8449aad35c5d840a3395ea86df6d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c3dabea9058dca617a366df6a2742eeb.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/dfcc4b0bd01c717cac051a0e626a6171.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e9976bae1a9df73646fcec05e463408b.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7e33cac3ae96733190b786adc9e8d9e6.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/8df69c6a544f62a016490b012c353ae7.png)
A.![]() | B.![]() |
C.![]() | D.![]() |
您最近一年使用:0次
2019-11-13更新
|
433次组卷
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3卷引用:上海市南汇中学2019-2020学年高一上学期十月考试数学试题
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9 . 若实数
、
满足
,则
的取值范围是
![](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/2d760b9c35d626366e2a1900b6de0655.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/916bb2cc1b29574ff95b47567c59ee0c.png)
A.![]() | B.![]() | C.![]() | D.![]() |
您最近一年使用:0次
2019-11-11更新
|
464次组卷
|
2卷引用:2019年上海市建平中学高三三模数学试题
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10 . 已知点
、
、
,则△
的面积是________ .
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/39ea1f5bdd213c7c3a571b4c38850bf1.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/3a20908aa5f7d27a6bc69a3d00e56486.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/225022c03ceb7dd5dfe3514971f132c9.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7bef5239ddbb0972700ce01daf9ee7cf.png)
您最近一年使用:0次
2019-11-11更新
|
314次组卷
|
4卷引用:2019年上海市建平中学高三三模数学试题