名校
1 . 已知数列
满足
,该数列的前
项和为
,则下列论断中错误 的是( )
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/83cf38189d5cbf627d2b82ac0eb76006.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/77506002cbe1b01b880d1d32862ce1ba.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b6a24198bd04c29321ae5dc5a28fe421.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/08eb71ecf8d733b6932f4680874dbbf3.png)
A.![]() | B.![]() |
C.![]() ![]() ![]() | D.![]() ![]() |
您最近一年使用:0次
2024-05-07更新
|
435次组卷
|
2卷引用:北京市昌平区2024届高三第二次统一练习数学试题
名校
2 . 给定正整数
,任意的有序数组
,
,定义:
,![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b1fb7a18149d91f94f0df6809403f9ed.png)
(1)已知有序数组
,
,求
及
;
(2)定义:n行n列的数表A,共计
个位置,每个位置的数字都是0或1;任意两行都至少有一个同列的数字不同,并且有只有一个同列的数字都是1;每一行的1的个数都是a;称这样的数表A为‘
表’.
①求证:当
时,不存在‘
表’;
②求证:所有的‘
表’的任意一列有且只有a个1.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0704f453b2de48d36911f7db496bbf82.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a2ed67043f7ad15e42d9e92b58adf81c.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/1cfcca94c8524dfefe471fd55be83736.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f00e0cc3c5765444157900fee292f7a9.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b1fb7a18149d91f94f0df6809403f9ed.png)
(1)已知有序数组
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b3500e2bc7384abda0ca78edaec3f6d0.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/778b1b95b10df70df052e1e1ceaca2c5.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c4ac911432046e3e6c58c5c599d54216.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/468eb380831acf6234e8b8aac2267daa.png)
(2)定义:n行n列的数表A,共计
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2ceef1abeeef220b4fe5f7d96feedd90.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/3b1ef8b58951134267aea088bb1ca4c4.png)
①求证:当
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/fac3649308b528fd56545ba102dc42d5.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/3b1ef8b58951134267aea088bb1ca4c4.png)
②求证:所有的‘
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/3b1ef8b58951134267aea088bb1ca4c4.png)
您最近一年使用:0次
名校
3 . 在
中,
,再从下列四个条件中选出两个条件,①
;②
;③
;④面积为
;使得
存在且唯一,则这两个条件是( )
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/15c0dbe3c080c4c4636c64803e5c1f76.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2449982298e35e2f1bf9082d1f5edf62.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c049333c882fdfc23cbcae98a5daea63.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/6de1d395e6c48c0676a1488a299479d9.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ceba46526c1a7df5929c00cd257dba3c.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/718358dfd51863e2db379726913fb352.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/15c0dbe3c080c4c4636c64803e5c1f76.png)
A.①② | B.①③ | C.②③ | D.①④ |
您最近一年使用:0次
2024-05-06更新
|
177次组卷
|
2卷引用:北京市一六六中学2023-2024学年高一下学期期中考试数学试卷
名校
解题方法
4 . 设盒中有大小相同的“中华”牌和“红星”牌玻璃球,“中华”牌的10个,其中3个红色,7个蓝色;“红星”牌的6个,其中2个红色,4个蓝色.现从盒中任取一个球,已知取到的是蓝色球的前提下,则它是“红星”牌的概率是______ .
您最近一年使用:0次
2024-05-04更新
|
450次组卷
|
3卷引用:北京市育才学校2023-2024学年高二下学期4月期中考试数学试题
2024·全国·模拟预测
解题方法
5 . 中国的农历七月初七被称为“七夕节”,象征着爱情与美好.某商场为了迎接“七夕节”的到来,特推出了购物抽奖活动.如图是由一个正方形与正三角形构成的图形,在点
处各安装了一盏灯,每次只有一处的灯亮起.初始状态是点
处的灯亮起,输入程序运行次数的上限
,然后按下开始按钮,程序开始运行,下一次是与
相邻点处的其中一盏灯随机亮起,再下一次是与上一次灯亮处相邻点的其中一盏灯随机亮起.若在运行过程中,点
处的灯再次亮起,则游戏结束,否则运行
次后游戏自动结束.在程序运行过程中,若点
处的灯再次亮起,则顾客获奖.现顾客小王参与抽奖活动.
,求小王获奖的概率.
(2)若
,记游戏结束时程序运行的次数为
,求
的分布列与期望.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f1d75df9d80ce1e0b7cb50464e293864.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5963abe8f421bd99a2aaa94831a951e9.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/3511d1fa76a49c3a367f87d5dfbe6091.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5963abe8f421bd99a2aaa94831a951e9.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5963abe8f421bd99a2aaa94831a951e9.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b6a24198bd04c29321ae5dc5a28fe421.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5963abe8f421bd99a2aaa94831a951e9.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/be604061cf1591f7069472269d4c9719.png)
(2)若
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7c345907ebe27888332b1b44c666cc47.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5b734e8f1546481e3eb4976008a045de.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5b734e8f1546481e3eb4976008a045de.png)
您最近一年使用:0次
6 . 若有穷自然数数列
:
满足如下两个性质,则称
为
数列:
①
,其中,
表示
,这
个数中最大的数;
②
,其中,
表示
,这
个数中最小的数.
(1)判断
:2,4,6,7,10是否为
数列,说明理由;
(2)若
:
是
数列,且
,
,
成等比数列,求
;
(3)证明:对任意
数列
:
,存在实数
,使得
.(
表示不超过
的最大整数)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5963abe8f421bd99a2aaa94831a951e9.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b8b9092e6c4f9186b55324c3a43ecd5c.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5963abe8f421bd99a2aaa94831a951e9.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/63f5c583c98a1fd516c6ceaa60b55dec.png)
①
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/bd5fe1c847904911c89504cef0973214.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/1445aef0f66cacf3c0b358775623fab1.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/36b14e03f30c56d9943e4a82d0e029b5.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c5873c01192b7d33b7483f444f90b5b0.png)
②
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/94beabf4bfbaa67081f1755fa5553a8e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e598a5ba40123abea0f6e4559535a61b.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/36b14e03f30c56d9943e4a82d0e029b5.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c5873c01192b7d33b7483f444f90b5b0.png)
(1)判断
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5963abe8f421bd99a2aaa94831a951e9.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/1daaf260a47403a2bdddd1268ebc44cd.png)
(2)若
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5963abe8f421bd99a2aaa94831a951e9.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2a878ab2590307a7a6f7afe576b7112c.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5d1cb4ffc937e336200fd70fc089041a.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e72adb45c60c2f63b46e65ff787302bf.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/3e88093a749c0d46e0ee931ecfaff925.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/6c1ccc6c74b8754e9bcbb3f39a11b6f1.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5da4cd81500bdb43118150dbdb1541e6.png)
(3)证明:对任意
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/63f5c583c98a1fd516c6ceaa60b55dec.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5963abe8f421bd99a2aaa94831a951e9.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b8b9092e6c4f9186b55324c3a43ecd5c.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/df64046e91b047037f19e4032e3b6de3.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f3e005b9c19a9b287aeefaa3af850beb.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/25f161c2a3717f1b6c62d0d7dae0b606.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/81dea63b8ce3e51adf66cf7b9982a248.png)
您最近一年使用:0次
7 . 如图,正方形
和矩形
所在的平面互相垂直.点
在正方形
及其内部运动,点
在矩形
及其内部运动.设
,给出下列四个结论:
,使
;
②存在点
,使
;
③到直线
和
的距离相等的点
有无数个;
④若
,则四面体
体积的最大值为
.
其中所有正确结论的序号是__________ .
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/411b38a18046fea8e9fab1f9f9b80a5f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2dde327febef2331a4766a79b433cc02.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/dad2a36927223bd70f426ba06aea4b45.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/411b38a18046fea8e9fab1f9f9b80a5f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/acc290b44635265137fdf13146b6a6d9.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2dde327febef2331a4766a79b433cc02.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ef70144bea23fc8154301b246bf3ef14.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f6bce3d91ca23b86d8c6625f2632e437.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/91f1c40ebcc993a5778478154c124f0c.png)
②存在点
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f6bce3d91ca23b86d8c6625f2632e437.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e7b9d4191b4dc51fddb22d1faf650c3b.png)
③到直线
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/03902478df1a55bc99703210bccab910.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/49b50357a6545cae8348e3059312f520.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/dad2a36927223bd70f426ba06aea4b45.png)
④若
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4f138877b595987abf3397aab8f9895e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c3019bf62527f7e614c49b803d7b59d8.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4dac452fbb5ef6dd653e7fbbef639484.png)
其中所有正确结论的序号是
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8 . 设A,B为两个非空有限集合,定义
其中
表示集合S的元素个数.某学校甲、乙、丙、丁四名同学从思想政治、历史、地理、物理、化学、生物这6门高中学业水平等级性考试科目中自主选择3门参加考试,设这四名同学的选考科目组成的集合分别为
,
,
,
.已知
{物理,化学,生物},
{地理,物理,化学},
{思想政治,历史,地理},给出下列四个结论:
①若
,则
{思想政治,历史,生物};
②若
,则
{地理,物理,化学};
③若
{思想政治,物理,生物},则
;
④若
,则
{思想政治,地理,化学}.
其中所有正确结论的序号是__________ .
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/069ec439d599e7989e74f4c4ac91d65f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/911cdb689ca80557ce076cb49b3ee498.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e097c8d4c948de063796bd19f85b3a9a.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/1e0bd63f55069a3bc870915010b39225.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/6899bf9cadae2ccdb14cbc87d4f280ee.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0f30f56664446f32dbbc2c5f12a99374.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b3dabace330ccdd9755fbcf32d5d6343.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f1b625192d7398634a02ea24fa78ed87.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ef354e5c5ff828cc8d27c71badd40f98.png)
①若
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d10b9f228c9a255aca3ace899db760d0.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/9620357ea5be4037cfdccd09a27d3862.png)
②若
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e9b4f81050636eac5b4f064fa0f06313.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/9620357ea5be4037cfdccd09a27d3862.png)
③若
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/9620357ea5be4037cfdccd09a27d3862.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a41bbaf9ee8f16ee2ab343dc164a8e48.png)
④若
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/231bca548a6ffe3013474743e1b5d039.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/9620357ea5be4037cfdccd09a27d3862.png)
其中所有正确结论的序号是
您最近一年使用:0次
9 . 已知数列
, 数列
, 其中
, 且
,
. 记
的前
项和分别为
, 规定
.记
,且
,
, 且 ![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e2eb6f7ab9b7df226e25144909bf4988.png)
(1)若
,
,写出
;
(2)若
,写出所有满足条件的数列
, 并说明理由;
(3)若
, 且
. 证明:
, 使得
.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7ede84ac3237446eb9857d13107c6af7.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/3b1f3b32082b32b0037239f83bd07b0f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e0dc0ca1a65849909105414b4da653b5.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/050226f8b132e50c700e4e227764b024.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b36d97b91e743859bd69450544fc8bec.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a897bad9d2bf64e63f47085a91cdb8c3.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b6a24198bd04c29321ae5dc5a28fe421.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/bd97eb7f00e8436abc39632f69d2d700.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/1d9443798361910c88bbc2a981af0877.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/fda27f54d6242ece29e2ab463de27c9e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f665a91c6d06059dbf6be8acce1c57ed.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4510b21e648ac40bd1a6f8f9d2277eb4.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e2eb6f7ab9b7df226e25144909bf4988.png)
(1)若
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/65be4255bc6139efe073d58898ac515c.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/64bc6f4cd5c23c281807e091210dafcd.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2fe7fd9b0c3c203a053a7ea52b71e7c9.png)
(2)若
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/56c5766e8cdffbee475ab541549946e8.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/76aef4cdcb5af742ce28003b7b6c8c20.png)
(3)若
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4bb049069cbe1c252309f2f35c17fffa.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/1b9da4d4cc472323b73956401767233b.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0e5e87dee68dcc490f71705a93020db9.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/971b0676bcb324b0b03f87351154cd10.png)
您最近一年使用:0次
名校
解题方法
10 . 某学校工会组织趣味投篮比赛,每名选手只能在下列两种比赛方式中选择一种.
方式一:选手投篮3次,每次投中可得1分,未投中不得分,累计得分;
方式二:选手最多投3次.如第1次投中可进行第2次投篮,如第2次投中可进行第3次投篮.如某次未投中,则投篮中止.每投中1次可得2分,未投中不得分,累计得分;
已知甲选择方式一参加比赛,乙选择方式二参加比赛.假设甲,乙每次投中的概率均为
,且每次投篮相互独立.
(1)求甲得分不低于2分的概率;
(2)求乙得分的分布列及期望;
(3)甲,乙谁胜出的可能性更大?直接写出结论.
方式一:选手投篮3次,每次投中可得1分,未投中不得分,累计得分;
方式二:选手最多投3次.如第1次投中可进行第2次投篮,如第2次投中可进行第3次投篮.如某次未投中,则投篮中止.每投中1次可得2分,未投中不得分,累计得分;
已知甲选择方式一参加比赛,乙选择方式二参加比赛.假设甲,乙每次投中的概率均为
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f89eef3148f2d4d09379767b4af69132.png)
(1)求甲得分不低于2分的概率;
(2)求乙得分的分布列及期望;
(3)甲,乙谁胜出的可能性更大?直接写出结论.
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