19-20高二下·江苏苏州·期中
1 . 已知函数
,其中
.
(1)若
,求
的值;
(2)若
,求
的最大值;
(3)若
,求证:
.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/53d2b110c5f66893e0a264dacd9ce2cc.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/6bd9736828195f010db4e1f0a9dea7a4.png)
(1)若
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d90fa90498298ea9b81a626c8c47d9c6.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/6c66d5df2c5bc1b55bd5a98fb855e890.png)
(2)若
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f91b2d3c097c8c873fad17cf8008e116.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0c62bd9b6fa3c0bae8ca1b4a6396bb30.png)
(3)若
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/88c9c39efc53af82fec6d9cf76db5afa.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b7f1b661980c4b0290be57aa7994cb6f.png)
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2 . 杨辉三角是二项式系数在三角形中的一种排列,在欧洲这个表叫做帕斯卡三角形,帕斯卡是在1654年发现这一规律的,我国南宋数学家杨辉在1261年所著的《详解九章算法》一书中出现了如图所示的表,这是我国数学史上的一次伟大成就,如图所示,在“杨辉三角”中去除所有为1的项,依次构成数列,2,3,3,4,6,4,5 ,10 ,10,5,……,则此数列的前119项的和为__________ .(参考数据:
,
,
)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5640000d44028c3909f56d7ff43a5936.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4335074e153c7683614e52fe8d021035.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/9ec461c21bc79db77c7ba5a00526d4b2.png)
![](https://img.xkw.com/dksih/QBM/2020/6/7/2479746469298176/2480119846043649/STEM/c66e9628efd8489b9b66f9b5533c6519.png?resizew=160)
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2020-06-08更新
|
1589次组卷
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4卷引用:湖北省“荆、荆、襄、宜”四地七校考试联盟2019-2020学年高二下学期期中联考数学试题
湖北省“荆、荆、襄、宜”四地七校考试联盟2019-2020学年高二下学期期中联考数学试题(已下线)高二数学下学期期中精选50题(压轴版)2021-2022学年高二数学下学期考试满分全攻略(人教A版2019选修第二册+第三册)(已下线)第三章 排列、组合与二项式定理 单元测试卷(B卷提升篇)-2020-2021学年高二数学选择性必修第二册同步单元AB卷(新教材人教B版)重庆市万州第二高级中学2024届高三上学期8月月考数学试题
3 . 设
且
,集合
,若对
的任意
元子集
,都存在
,满足:
,
,且
为偶数,则称
为理想集,并将
的最小值记为
.
(1)当
时,是否存在理想集?若存在,求出相应的
;若不存在,请说明理由;
(2)当
时,是否存在理想集?若存在,直接写出对应的
以及满足条件的
;若不存在,请说明理由;
(3)证明:当
时,
.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0704f453b2de48d36911f7db496bbf82.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/65a40142c84be68ee2918c3a8303388c.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/179de8d0ec06e96b2fa0ac16ede34e0e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b52b4f24969673c863b5aff4fb6751ce.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f0a532e15e232cb4b99a8d4d07c89575.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c76fbcfa1d6ec3bec5f131a8c953a705.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/bbd28f29074d36b6721a929eb217f9ba.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/8b73abfe4bc26b1ded680d7abb1a2cac.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/cf538440bd45e5881f2b22994560ba7a.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/1ae24688d4c45aad43e9af0b7bbfda6b.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c76fbcfa1d6ec3bec5f131a8c953a705.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f0a532e15e232cb4b99a8d4d07c89575.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/cf3834d7ec7531f3c3c0ce9b286f7a49.png)
(1)当
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/cc2d3df37e73a8abea815f37dbb3fff5.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/cf3834d7ec7531f3c3c0ce9b286f7a49.png)
(2)当
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/be604061cf1591f7069472269d4c9719.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c76fbcfa1d6ec3bec5f131a8c953a705.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/76f0649064a085fb74c997fb507a9b6d.png)
(3)证明:当
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/fac3649308b528fd56545ba102dc42d5.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/8b58ca66d3e9ac1283703b5063ac9bea.png)
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名校
解题方法
4 . 已知函数![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f4793adfb0c555d37a26834ae2715006.png)
(1)求函数
在
上的最大值;
(2)当
时,求证:
.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f4793adfb0c555d37a26834ae2715006.png)
(1)求函数
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/09f86f37ec8e15846bd731ab4fcdbacd.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/579e2c39e6c0a640357e3b0ccd6f954a.png)
(2)当
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0b550ee821ee1838384835e81fc34b67.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b994959d259bf83906f46779a04d6497.png)
您最近一年使用:0次
5 . 在探究
的展开式的二项式系数性质时,我们把二项式系数写成一张表,借助它发现二项式系数的一些规律,我们称这个表为杨辉三角(如图1),小明在学完杨辉三角之后进行类比探究,将
的展开式按x的升幂排列,将各项系数列表如下(如图2):
表示,即
展开式中
的系数为
,则( )
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c9216a0f9d6e65ea4937ab7bf102c5db.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/affdb56951c1eb5c394817b973cf4434.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/3b87d2924395caf206ff6e6692c3cd0b.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/affdb56951c1eb5c394817b973cf4434.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/6fdf138124aba5204739cafbf1b59d47.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d83651456ad892247ebda19d98c40e9c.png)
A.![]() |
B.![]() |
C.![]() |
D.![]() |
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2024-06-04更新
|
282次组卷
|
2卷引用:山东省泰安市2023-2024学年高二下学期期中考试数学试题
名校
解题方法
6 . 已知集合
,集合
为集合
的m元子集,且
中元素均为孤立元素.孤立元素的定义为:当
,
且
时,则称x为集合A中的孤立元素.
(1)列出所有符合题意的集合
;
(2)设
为集合
的所有可能的集合个数,求
的最大值,并说明理由;
(3)在集合
的所有可能集合中,存在元素在所有可能的集合中出现的次数最少,求出这样的元素并指出其出现次数,并说明理由.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/43aed1fbdc3e59ddca65616a8032c86d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/460232498c0e47193a4596c62588ef4e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d3cfeacc29e6a61c5b3b4e439c0a91df.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/460232498c0e47193a4596c62588ef4e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/6ed006b944ea64f970fee46e2f558467.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2d7bab5c9e0c5d09cfe76979f397045b.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7bbcd2a731f4d4c2ac74d83c18868f57.png)
(1)列出所有符合题意的集合
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/039304a553c3ef867f871c278fed143c.png)
(2)设
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/1abd31daaca5f78c8a5e07df8be95cc9.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7ce89e04fb12f3b0a47ba43b81830fc9.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/1abd31daaca5f78c8a5e07df8be95cc9.png)
(3)在集合
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/71f7b5500f978ac4ea09f6dc45700cb5.png)
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7 . 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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8 . 集合
且
,若
,且
,
,令
.
(1)
若
,满足
,请写出一个符合题意的
,并求出
;
(2)若集合
,任取
中2个不同的元素
,求集合
中元素个数的最大值;
(3)若存在
,使
,集合中任两个元素不同,求出此时
.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/8afb994f4d6079603cbf46f395e512e7.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f42276f02e595121d35171554a735f31.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/6c7620daddd185dac88c3534c0dc4487.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/1da699996ed9e57b4f536c811d64c487.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c9063138d7c0f40f544c275a714cc626.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ed4d4e17981fbb90b17a8e7b47d7fa99.png)
(1)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0df62a2d692431f0f4c481ef7b387c35.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a7d66322be72a5324f708d09c003679f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/6fdd3a05b298ecaec3843e99061b01cc.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/686bd782291ddba5cd281f024c1746d8.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/6433e0b49d284d561826900ea76a261b.png)
(2)若集合
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/caf22d7d1a965bda25168a233fb6290c.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7f9e8449aad35c5d840a3395ea86df6d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/850d5c706db7a763b0ea0117c6dc5084.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7f9e8449aad35c5d840a3395ea86df6d.png)
(3)若存在
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2911f1ce84be9464ba57d158ac7c6a2b.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0606069a64e67680c15723bbc87ab59b.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4b98387c7606916b5cdb60266d0b5452.png)
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2020-11-11更新
|
947次组卷
|
2卷引用:北京市朝阳区清华大学附属中学朝阳学校2021-2022学年高二上学期期中数学试题
名校
9 . 设
为给定的大于2的正整数,集合
,已知数列
:
,
,…,
满足条件:
①当
时,
;
②当
时,
.
如果对于
,有
,则称
为数列
的一个逆序对.记数列
的所有逆序对的个数为
.
(1)若
,写出所有可能的数列
;
(2)若
,求数列
的个数;
(3)对于满足条件的一切数列
,求所有
的算术平均值.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b6a24198bd04c29321ae5dc5a28fe421.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e5de998be2d94d13a52c269c53d2cdfe.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d3cfeacc29e6a61c5b3b4e439c0a91df.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c814128ea2139e33db94ea590e7c2223.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/aec19b68e3add9d5bfcc6269a1855b87.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/3282e5fde4ae53fcb1bb072a685304c9.png)
①当
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/6ef835c9ad2636a9662fb6c99e3abc78.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d09ca387c74ea67a69c5d757aff4471e.png)
②当
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/937c09d82c480e4d67f8a48d3f66c5f5.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c8ed8bcecf6762164c9f8894942d5083.png)
如果对于
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/937c09d82c480e4d67f8a48d3f66c5f5.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2579fa4a2b6e97fdbe67d24f2f9bc78e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d4eeb7fac3defece6a8d27d1b5fe83fd.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/5fb1d7f5c0fa9fbdc9be0378ab5e5c45.png)
(1)若
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7fc2b50e81054df70a5f19c266d4f92e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/9e47cd514b2920609e3781c87df6ab70.png)
(2)若
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f7332e4af9bac83f37bd78351ae70769.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d3cfeacc29e6a61c5b3b4e439c0a91df.png)
(3)对于满足条件的一切数列
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d3cfeacc29e6a61c5b3b4e439c0a91df.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5fb1d7f5c0fa9fbdc9be0378ab5e5c45.png)
您最近一年使用:0次
2020-05-01更新
|
971次组卷
|
6卷引用:北京市清华大学附属中学2019~2020学年高二下学期期中考试数学试题
北京市清华大学附属中学2019~2020学年高二下学期期中考试数学试题(已下线)高二数学下学期期中精选50题(压轴版)2021-2022学年高二数学下学期考试满分全攻略(人教A版2019选修第二册+第三册)2020届北京市清华附中高三第二学期第三次统练数学试题2020届北京市八一中学高三数学四月份统练试题(已下线)专题09 计数原理与概率统计-【备战高考】2021年高三数学高考复习刷题宝典(压轴题专练)(已下线)第6章 计数原理(新文化与压轴30题专练)2021-2022学年高二数学下学期考试满分全攻略(人教A版2019选修第二册+第三册)
名校
解题方法
10 . 已知非空集合M满足M⊆{0,1,2,…n}(n≥2,n∈N+).若存在非负整数k(k≤n),使得当a∈M时,均有2k-a∈M,则称集合M具有性质P.设具有性质P的集合M的个数为f(n),求
的值为______ .
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/9f119697ef4e41edfe652afa0ac68025.png)
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2019-05-04更新
|
1244次组卷
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3卷引用:【全国百强校】江苏省无锡市第一中学2018-2019学年高二第二学期期中数学(理科)试题
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