1 . 我们称
元有序实数组
为
维向量,
为该向量的范数,已知
维向量
,其中
,记范数为奇数的
维向量
的个数为
,这
个向量的范数之和为
.
(1)求
和
的值;
(2)求
的值;
(3)当
为偶数时,证明:
.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/223ed9652852ca4d996fd1f20808df9a.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/60a79b7ec77425af9152ef0cd3dacfe9.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b6a24198bd04c29321ae5dc5a28fe421.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b45981f9cd45bf7b0655d3c9e461fff5.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b6a24198bd04c29321ae5dc5a28fe421.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d1e894b2a2d6b062551e7d16fce65940.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0d6439d5087f29dd37b0627182ba5187.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b6a24198bd04c29321ae5dc5a28fe421.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/64c5562bd4d1b54424330cb6329cd79d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d3cfeacc29e6a61c5b3b4e439c0a91df.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d3cfeacc29e6a61c5b3b4e439c0a91df.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/63f5c583c98a1fd516c6ceaa60b55dec.png)
(1)求
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/04b56e44e4f0424a2b7a45567120a2e4.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2857fac4963b129d99e79dcb3e13d295.png)
(2)求
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7de9d5e95ba59043c71849a58cd8d061.png)
(3)当
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b6a24198bd04c29321ae5dc5a28fe421.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/953e362ec77e9d5a01ea534385d5a8d4.png)
您最近一年使用:0次
23-24高三上·北京西城·期末
名校
解题方法
2 . 给定正整数
,已知项数为
且无重复项的数对序列
:
满足如下三个性质:①
,且
;②
;③
与
不同时在数对序列
中.
(1)当
,
时,写出所有满足
的数对序列
;
(2)当
时,证明:
;
(3)当
为奇数时,记
的最大值为
,求
.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ad2477167a02872167b2a3760f09d6ef.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/294f5ba74cdf695fc9a8a8e52f421328.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5963abe8f421bd99a2aaa94831a951e9.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4dc25d4213ca2eadce49e6d8ba805e15.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d1b730e2023809495f2bd7fbf48f07a5.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ca986e62ec3a6e50e4e2cad639aa9201.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/fd869b784314b8278f5d144b2d3a9fb5.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/698c4d4e50062b4a7dd70fe1b4ab4fd7.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/302391681aa37ac20d6f533dbae9e137.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5963abe8f421bd99a2aaa94831a951e9.png)
(1)当
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7a215612787e43d28bfebc840c3903b6.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d8a3cc8c48bf54ec8252e5dce6867754.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/87a60302649eb940748da818199e55da.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5963abe8f421bd99a2aaa94831a951e9.png)
(2)当
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/241d587c2e6f2f109a4e41b79f1c800f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/926c16dd072c9ff8a560b003cfb47053.png)
(3)当
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/54a5d7d3b6b63fe5c24c3907b7a8eaa3.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/294f5ba74cdf695fc9a8a8e52f421328.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4546b12ff89d1599427da82294afc09b.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4546b12ff89d1599427da82294afc09b.png)
您最近一年使用:0次
2024-01-19更新
|
2115次组卷
|
7卷引用:北京市西城区2024届高三上学期期末数学试题
(已下线)北京市西城区2024届高三上学期期末数学试题北京市西城区2024届高三上学期期末数学试题(已下线)高三数学开学摸底考 (北京专用)2024年普通高等学校招生全国统一考试数学冲刺卷二(九省联考题型)江西省南昌市第二中学2024届高三“九省联考”考后适应性测试数学试题(四)江苏省连云港高级中学2023-2024学年高二下学期第一次月考数学试卷广东省深圳市外国语学校2024届高三教学情况测试(一)数学试题
12-13高一上·北京·期末
名校
3 . 已知集合
,若集合
,且对任意的
,存在
,
,使得
(其中
),则称集合
为集合
的一个
元基底.
(1)分别判断下列集合
是否为集合
的一个二元基底,并说明理由;
①
,
;
②
,
.
(2)若集合
是集合
的一个
元基底,证明:
;
(3)若集合
为集合
的一个
元基底,求出
的最小可能值,并写出当
取最小值时
的一个基底
.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/806fb311a1ddd23364eb67dc6eaf9aee.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/fbb33db56afdfe2e6b023d001b8c7314.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/dab92728b35ed5798e07a2b0095bfcc1.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/50a272adba0f1120109824440f0e252c.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a347b942334e794abc5d1a583e8b434d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/64950c9fd9dc31394b2e00401d1b70ff.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/29ad20a92aea25d3d1800ec6cb93699c.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5963abe8f421bd99a2aaa94831a951e9.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ac047e91852b91af639feec23a9598b2.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/294f5ba74cdf695fc9a8a8e52f421328.png)
(1)分别判断下列集合
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5963abe8f421bd99a2aaa94831a951e9.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ac047e91852b91af639feec23a9598b2.png)
①
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5453c0f95e052beb1edece487d9cab07.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/522954ce536d559cf03638d87fad504c.png)
②
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ca4863b95f36a4af59514b7c77e02e30.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/3757ba09c1d5ceb4632a8ddd47230902.png)
(2)若集合
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5963abe8f421bd99a2aaa94831a951e9.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ac047e91852b91af639feec23a9598b2.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/294f5ba74cdf695fc9a8a8e52f421328.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2413015bd5826b340903708cc7750a0b.png)
(3)若集合
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5963abe8f421bd99a2aaa94831a951e9.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/bdc98f4e6c9f9a1dc1080d0e0998fc99.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/294f5ba74cdf695fc9a8a8e52f421328.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/294f5ba74cdf695fc9a8a8e52f421328.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/294f5ba74cdf695fc9a8a8e52f421328.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ac047e91852b91af639feec23a9598b2.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5963abe8f421bd99a2aaa94831a951e9.png)
您最近一年使用:0次
2023-03-22更新
|
1066次组卷
|
15卷引用:计数原理与排列组合
(已下线)计数原理与排列组合【北京专用】专题05计数原理(第二部分)-高二上学期名校期末好题汇编(已下线)专题01 数列(6大考点经典基础练+优选提升练)-【好题汇编】备战2023-2024学年高二数学下学期期末真题分类汇编(新高考专用)(已下线)2011-2012学年北京市育园中学高一第一学期期末考试数学北京市第二中学2020-2021学年高一下学期期末数学试题北京市清华大学附属中学2022届高三下学期数学统练6试题北京市丰台区丰台第二中学2023届高三上学期12月月考数学试题上海市进才中学2020-2021学年高二下学期期末数学试题(已下线)北京市第四中学2023届高三阶段性考试(零模)数学试题北京市汇文中学教育集团2022-2023学年高二下学期期中考试数学试题北京市广渠门中学2022-2023学年高二下学期期中考试数学试题北京市第五十七中学2022-2023学年高二下学期期中测试数学试题北京市第二中学2022-2023学年高二下学期第六学段(期末)考试数学试题(已下线)上海高二下学期期末真题精选(压轴60题35个考点专练)-【满分全攻略】2022-2023学年高二数学下学期核心考点+重难点讲练与测试(沪教版2020选修一+选修二)(已下线)难关必刷01集合的综合问题(3种题型40题专项训练)-【满分全攻略】(人教A版2019必修第一册)
名校
4 . 已知集合
,其中
.对于
,
,定义
与
之间的距离为
.
(1)记
,写出所有
使得
;
(2)记
,
、
,并且
,求
的最大值;
(3)设
,
中所有不同元素间的距离的最小值为
,记满足条件的集合
的元素个数的最大值为
,求证:
.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/11d9b434ed11c614630ad6a71bf1b196.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0704f453b2de48d36911f7db496bbf82.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/53422543e9a9311416faf749bdda67b2.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ec1a7c3713945abc4eca8485945abf32.png)
![](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/80ebc8c7e32c1b561a908a36cfa2cbb5.png)
(1)记
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/de36ac74e2640a897dedd876abcb63b9.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/644d2ee36439bbc01fb4f35e9d24e5bf.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5cf15320a185c13d59087e9391485612.png)
(2)记
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d089503d05901e02113c0ed0bd59dff8.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5963abe8f421bd99a2aaa94831a951e9.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/81a3b20462ba83086d0711a25ed83bad.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a8b9dbb9c52862ac974003241d68fb61.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f3bcb4828b16c8e845492f1a53ddd9a9.png)
(3)设
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7a2b280a6a65c9bf2f20cad5d1106080.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/dad2a36927223bd70f426ba06aea4b45.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f0a532e15e232cb4b99a8d4d07c89575.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/dad2a36927223bd70f426ba06aea4b45.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/294f5ba74cdf695fc9a8a8e52f421328.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/9ff60dcf2b1b2484b1ba940af96d336c.png)
您最近一年使用:0次
2021-05-30更新
|
1166次组卷
|
3卷引用:福建省永春一中、培元中学、石光中学、季延中学2024届高三下学期第二次联合考试数学试题
5 . 在集合
中,任取
个元素构成集合
.若
的所有元素之和为偶数,则称
为集合
的偶子集,其个数记为
;若
的所有元素之和为奇数,则称
为集合
的奇子集,其个数记为
.
(1)求
,
的值;
(2)求
;(结果用含
的多项式表示)
(3)当
为偶数时,证明:
+
=
.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c1cc63028c8858be8ec2f4d071c3a019.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5b9ad0fa498189f3821045b99f8980b2.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7a0d7559d8dfa8236ca9d4b1853fbdec.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7a0d7559d8dfa8236ca9d4b1853fbdec.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7a0d7559d8dfa8236ca9d4b1853fbdec.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5963abe8f421bd99a2aaa94831a951e9.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2a33588ff0aa3fcc6efafc5a5a99ba90.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7a0d7559d8dfa8236ca9d4b1853fbdec.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7a0d7559d8dfa8236ca9d4b1853fbdec.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5963abe8f421bd99a2aaa94831a951e9.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b78cd844b6fce430ef28c2b5e760e3f7.png)
(1)求
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/fc76acb40775f16af461f74d29efdb65.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/8d59b0f0ee3731e6dbb3899e56a6d163.png)
(2)求
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/66afb8918fa1fecdf44f5075ce17e80e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b6a24198bd04c29321ae5dc5a28fe421.png)
(3)当
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b6a24198bd04c29321ae5dc5a28fe421.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a54b0a5c5422dc0c0ce1eb61de371694.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/92b990adae52d73e957230785359538e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f3f9ee40504cd3b0a8cf9117d353d101.png)
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