1 . 若不等式组
的解集中的元素有且仅有有限个数,则![](https://staticzujuan.xkw.com/quesimg/Upload/formula/380bbacf854e30e2e747fc286d2b9997.png)
________ .
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f92033a630aaedae5a052aec765ca4e5.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/380bbacf854e30e2e747fc286d2b9997.png)
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名校
2 . 已知数列
满足:
,
,且
(
),记集合
,集合
的元素个数的最大值是 _________ .
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/63d471926f7b27322d90c82b9ce21d3d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/87397e6df8ed820638eea31e403a94b0.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/69552a67ba83e9c4a70901a5d49a8519.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2b75aa0e893f274541ed303fae669bf4.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5401eba633db31a7d93e3654dc3fdb51.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7031d1c1391eea818e867539c86fabb6.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ac047e91852b91af639feec23a9598b2.png)
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2019-12-08更新
|
402次组卷
|
2卷引用:上海市复旦大学附属中学2018-2019学年高三上学期10月月考数学试题
名校
3 . 设
是平面直角坐标系中的一个正八边形,点
的坐标为
(
),集合
存在
,使得
,则集合
的元素个数可能为________ (写出所有可能的值).
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d5d984f305898bdc97a50340c8cdd180.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/59c709117ab1d3ef620883a732aed68b.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/411a44b57e5fdbd6634f21a94144cfe2.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/10830da084bcba1f326ef9f34d28d8df.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/aba15f6c8490eb2aa501b7c94b2ed9f1.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/145ae1b87660d6e9d87546c005954ce8.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/75ee0b75f39efe2aaafa507871d380b4.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5963abe8f421bd99a2aaa94831a951e9.png)
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2019-11-11更新
|
444次组卷
|
4卷引用:2019年上海市控江中学高三三模数学试题
2019年上海市控江中学高三三模数学试题北京市海淀区2022-2023学年高三下学期5月月考模拟数学试题北京市海淀区2023届高三高考数学模拟试题(已下线)专题01集合的概念-【倍速学习法】(人教A版2019必修第一册)
2019高三·江苏·专题练习
4 . 已知集合
且
,则集合
中的元素个数为________ 个.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/660f05f1d817c6443d4a4652a270db24.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/02c81eb36d42c6c3f10159c156709157.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5963abe8f421bd99a2aaa94831a951e9.png)
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5 . 已知集合
,
,则
中元素的个数为________ .
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e3a92ecd031637f3801b7c13080ac350.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/96e4bf69f1be295b623c851d1e155c96.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/8fdbfa7a63fdf5717d40c8c9a73ec160.png)
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2014·四川成都·一模
解题方法
6 . 已知函数
的定义域为
,给定两集合
及![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b1f9fabbbe61a759e52ec975215e2e7c.png)
,则集合
的元素个数是_________ .
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/1d6b2148fae0c835f21c0c8f2131f9bf.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/cf3ed15aa3dcc4211fb520b5b942c989.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/229e328799fc76704b032e95ac4ecb95.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b1f9fabbbe61a759e52ec975215e2e7c.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ebc905f4450c237e2b8f4a3e58ac0aa4.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/8fdbfa7a63fdf5717d40c8c9a73ec160.png)
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2014·江苏淮安·一模
7 . 若等差数列
和等比数列
的首项均为1,且公差
,公比
,则集合
的元素个数最多有_____ 个.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/83cf38189d5cbf627d2b82ac0eb76006.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/034ba25825c13725931c483aa47c9363.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c4ce64685821c3e55c07f151996ca8c3.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/eda6dc559d07bc22c9a0ed1e3a6d01d2.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/70a65832d91e72ee61565fe6feb19728.png)
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13-14高三上·江苏扬州·阶段练习
8 . 设![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a11a16069e95a7ed7e98682755df7357.png)
,
的所有非空子集中的最小元素的和为
,则
=__ .
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a11a16069e95a7ed7e98682755df7357.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/75c438976fa206f35f0287f9b7935ca2.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d3cfeacc29e6a61c5b3b4e439c0a91df.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/cf231f8f86fb922df4ca0c87f044cec3.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/cf231f8f86fb922df4ca0c87f044cec3.png)
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