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1 . 集合
如果存在一组两两不交的(两个集合交集为空集时,称为不交)非空子集
、
、…、
,满足
,则称子集组
、
、…、
构成集合
的一个
划分.子集组
:
(
),与子集组
:
(
)的并集都是集合
.
(1)用列举法写出集合
.
(2)判断其子集组
、
是否分别是
的
划分与
划分.
(3)在子集组
、
中任取7个子集,求其并集
中元素个数的最小值.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b52b4f24969673c863b5aff4fb6751ce.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/096b1ece1dcd29c59a46a4b3e02cb548.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e5031a3a951c4a1d1c5e9f80a5e26513.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a9cce113f874ea096ee027d0c7d2ad27.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ee48253405e6c9049f19c9a95bb30c8d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/096b1ece1dcd29c59a46a4b3e02cb548.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e5031a3a951c4a1d1c5e9f80a5e26513.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a9cce113f874ea096ee027d0c7d2ad27.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b52b4f24969673c863b5aff4fb6751ce.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/1c93e3391890fc877c761121b68cb927.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5963abe8f421bd99a2aaa94831a951e9.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/87463e347cd9488b91bbda9db8a58ff0.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/42882be9e0803a11be7f7fd70b674a3f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7f9e8449aad35c5d840a3395ea86df6d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ab73f7a1b9ddcf8f8587ccfeaa5c7258.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4471800255a6a7079bd6e60d7905af9b.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/cf231f8f86fb922df4ca0c87f044cec3.png)
(1)用列举法写出集合
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/cf231f8f86fb922df4ca0c87f044cec3.png)
(2)判断其子集组
![](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/cf231f8f86fb922df4ca0c87f044cec3.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/cf5662998f65211a3592cb2b3e193a40.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0d6807a0f544ff91651861813741cd48.png)
(3)在子集组
![](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/91edc7e2d4811f5ea6c01284cf00393a.png)
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2 . 设集合
,若集合S中的元素同时满足以下条件:
①
,
恰好都含有3个元素;
②
,
,
为单元素集合;
③![](https://staticzujuan.xkw.com/quesimg/Upload/formula/1f5e5858ed377ffaf700c868a38e7256.png)
则称集合S为“优选集”.
(1)判断集合
,
是否为“优选集”;
(2)证明:若集合S为“优选集”,则
,
至多属于S中的三个集合;
(3)若集合S为“优选集”,求集合S的元素个数的最大值.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c32fe32077f54b51282141c6f6217071.png)
①
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/296902bfc14bde752a4503d57351988a.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e819b87f90651d89fcd258c276294e43.png)
②
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/866fcccdcf1d7bf2f73d4323b4c1c1e6.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4b71af6590f0f369c164a054a8b63bf6.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d41e1766af890659ac91f4ed407f5a0f.png)
③
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/1f5e5858ed377ffaf700c868a38e7256.png)
则称集合S为“优选集”.
(1)判断集合
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4d7d06d943bfb67f20183899803ef150.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a839a1d941f18f084505c7e8614c984b.png)
(2)证明:若集合S为“优选集”,则
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7060f36f24efe532ddd3f12084f36d83.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/81dea63b8ce3e51adf66cf7b9982a248.png)
(3)若集合S为“优选集”,求集合S的元素个数的最大值.
您最近一年使用:0次
2023-01-19更新
|
566次组卷
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名校
3 . 对集合
的每一个非空子集,定义一个唯一确定的“交替和”,概念如下:按照递减的次序重新排列该子集,然后从最大的开始,交替减加后面的数所得的结果.例如:集合
的“交替和”为
,集合
的“交替和”为
,集合
的“交替和”为6,则集合
所有非空子集的“交替和”的和为( )
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ac4dbc287804fded7b1d4d0b87a4adc4.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/45e9517ef8cc3a67799757b5829b2138.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2ca841080866d8a30560305e45ed6c54.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/9e41e9c0546454ea0e8abf887cf1f46d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/77ee036d8424e91453f9003c91886be8.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/21b522d9bc9f5605f916b41504ca684f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5963abe8f421bd99a2aaa94831a951e9.png)
A.![]() | B.![]() | C.![]() | D.![]() |
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名校
4 . 对于任意实数
,
表示不小于的最小整数,如
,定义在
上的函数
,若集合
,则集合
中所有元素的和为_______
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/81dea63b8ce3e51adf66cf7b9982a248.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d2efc4b458ea20c1acca4317505e9fd2.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ef48d3b8cfd6ba562dd3849b55a9a616.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4aa0df7f1e45f9de29e802c7f19a4f64.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/08fd3eb9aeda001dfaff5de9e6bb47e8.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d964dd54814591165ec8fd664b2a6cac.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5963abe8f421bd99a2aaa94831a951e9.png)
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2019-11-07更新
|
644次组卷
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4卷引用:湖南省株洲市第八中学2023-2024学年高一上学期11月期中数学试题
湖南省株洲市第八中学2023-2024学年高一上学期11月期中数学试题上海市敬业中学2018-2019学年高一上学期期末数学试题(已下线)期末测试(能力提升)(1)-2020-2021学年高一数学(必修一)单元测试定心卷(沪教版2020)(已下线)1.1集合的表示方法(第2课时)