2024·新疆·二模
1 . 已知
为等差数列,前
项和为
,若
.
(1)求
;
(2)对任意的
,将
中落入区间
内项的个数记为
.
①求
;
②记![](https://staticzujuan.xkw.com/quesimg/Upload/formula/21994bfbef6747323a4babeaad5ac3aa.png)
的前
项和记为
,是否存在
,使得
成立?若存在,求出
的值;若不存在,请说明理由.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/83cf38189d5cbf627d2b82ac0eb76006.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b6a24198bd04c29321ae5dc5a28fe421.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f1ae9a3b0b7aeb1545b65d91aa371b3c.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/339865978be58b8f79826e8eb40c8991.png)
(1)求
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/96abfe2da27a63e6affb19a0c80236d9.png)
(2)对任意的
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c7905fd422e78a1d22ff6f11950bc5cb.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/83cf38189d5cbf627d2b82ac0eb76006.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4a0df4a5aaca41fb8a04abfd8e2c6fc6.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/62c320a0619c63a5b650a1a94c0a5679.png)
①求
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0f64696f60c533ad95dc7890eb902741.png)
②记
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/21994bfbef6747323a4babeaad5ac3aa.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f6ab8dbdcb039662a5bdbb9070c10a62.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/294f5ba74cdf695fc9a8a8e52f421328.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f7e74be91bfe4bc209da7539dbf9b72c.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/51dd2e6ae984287a03184b4c8aac4177.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d972840c59422fe11f988ef3ae5294d5.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f4d8305fb797b03cab3ba6059c518d14.png)
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解题方法
2 . 已知正项数列
中,
,且
为其前
项和,若存在正整数
,使得
成立,则
的取值范围是_______ .
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/83cf38189d5cbf627d2b82ac0eb76006.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f6065aaa8f3f103d1bc960da8318ce35.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5b6ddadd47ab8abb0144091f1e6a7b3d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b6a24198bd04c29321ae5dc5a28fe421.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b6a24198bd04c29321ae5dc5a28fe421.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b2d2d2427339a417ddb8cb40b0d1442a.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/294f5ba74cdf695fc9a8a8e52f421328.png)
您最近一年使用:0次
解题方法
3 . 已知函数
的定义域为
,
,
,则下列命题正确的是( )
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/09f86f37ec8e15846bd731ab4fcdbacd.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a43b2faa4f81f32d94612dce724e772b.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f70e0db0174a2c05b28fb6d0c2508778.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f7adacefd80dcfd1d6f3a018edaeb68a.png)
A.![]() | B.![]() ![]() |
C.若![]() ![]() | D.若![]() ![]() |
您最近一年使用:0次
真题
名校
4 . 已知数列
是首项为正数的等差数列,数列
的前
项和为
.
(1)求数列
的通项公式;
(2)设
,求数列
的前
项和
.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/fe229b24e2d56ff6b491725ceae4ff2f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/8ef5561a645f3f67290f31631d465fca.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b6a24198bd04c29321ae5dc5a28fe421.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/958b23fabde33988b941240a6f82c44b.png)
(1)求数列
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/fe229b24e2d56ff6b491725ceae4ff2f.png)
(2)设
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/802fe1d43065964fd79c25932f3bc13b.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/bee4464b3b4eb6e52ee02f095aae84f0.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b6a24198bd04c29321ae5dc5a28fe421.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/cb26cd1601fe7e76e1e2dc0b4909324a.png)
您最近一年使用:0次
2016-12-03更新
|
9436次组卷
|
24卷引用:湖南省长沙市雅礼中学2024届高三上学期月考试卷(三)
湖南省长沙市雅礼中学2024届高三上学期月考试卷(三)(已下线)专题21 数列解答题(文科)-2专题29数列解答题2015年全国普通高等学校招生统一考试文科数学(山东卷)2016届辽宁省大连市二十中高三10月月考文科数学试卷2017届河北沧州一中高三11月月考数学(文)试卷黑龙江省牡丹江市第一高级中学2018届高三10月月考数学(文)试题【全国校级联考】云南省红河州2018届高三复习统一检测数学(理)试题黑龙江省哈尔滨市第六中学2020届高三上学期期中数学(文)试题河南省濮阳市2019-2020学年高二上学期期末数学(理)试题河南省濮阳市2019-2020学年高二上学期期末数学(文)试题陕西省榆林市绥德中学2019-2020学年高二下学期第一次阶段性测试数学(文)试题江西省宜春市奉新县第一中学2019-2020学年高一下学期第一次月考数学试题安徽省安庆市怀宁中学2019-2020学年高一下学期期中理科数学试题江西省靖安中学2019-2020学年高一下学期第一次月考数学试题山西省新绛县第二中学2019-2020学年高一下学期6月月考数学试题人教A版(2019) 选择性必修第二册 过关斩将 全书综合测评安徽省安庆市怀宁县第二中学2020-2021学年高三上学期第五次月考数学(文)试题河南省焦作市县级重点中学2021-2022学年高三上学期期中考试文科数学试题甘肃省兰州市第五十九中学2022-2023学年高二下学期开学检测数学试题黑龙江省哈尔滨市第十三中学2022-2023学年高三下学期开学检测数学试题内蒙古包头市第四中学2022届高三第四次校内模拟文科数学试题甘肃省张掖市某重点校2023-2024学年高二上学期10月月考数学试题湖南省长沙市雅礼中学2024届高三上学期月考试卷 (三)数学试题
名校
解题方法
5 . 已知三棱锥
的棱长均为6,其内有
个小球,球
与三棱锥
的四个面都相切,球
与三棱锥
的三个面和球
都相切,如此类推,
,球
与三棱锥
的三个面和球
都相切(
,且
),球
的表面积为
,体积为
,则( )
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/891579e7c231584a8e16b8eeff79888e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b6a24198bd04c29321ae5dc5a28fe421.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/23f919bd3dde10dbbc076f7ec5149699.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/891579e7c231584a8e16b8eeff79888e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/3c4f6f74444b2b7947fc6e35c8d62322.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/891579e7c231584a8e16b8eeff79888e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/23f919bd3dde10dbbc076f7ec5149699.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/daa5e9bd516f6282483b92cfe6074623.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/be77704255b3cadb7ae2a66ec35205ec.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/891579e7c231584a8e16b8eeff79888e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/28cc0f93939bfa9e1f913b18dd9d15ce.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0704f453b2de48d36911f7db496bbf82.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a37a59558292ad6b3d0978bfd7484990.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/be77704255b3cadb7ae2a66ec35205ec.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/08eb71ecf8d733b6932f4680874dbbf3.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e1657453b0ed28c4e716b0fb8db552b2.png)
A.![]() |
B.![]() |
C.数列![]() ![]() |
D.数列![]() ![]() |
您最近一年使用:0次
2023-07-06更新
|
720次组卷
|
3卷引用:云南师范大学附属中学2024届高三高考适应性月考卷(一)数学试题
名校
解题方法
6 . 已知集合
是公比为2的等比数列且
构成等比数列.
(1)求数列
的通项公式;
(2)设
是等差数列,将集合
的元素按由小到大的顺序排列构成的数列记为
.
①若
,数列
的前
项和为
,求使
成立的
的最大值;
②若
,数列
的前5项构成等比数列,且
,试写出所有满足条件的数列
.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/6a0784cd34f64a4d35e5b5d1293d0bd0.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/543d98f8ca582058c814c1fe20e1e87e.png)
(1)求数列
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/83cf38189d5cbf627d2b82ac0eb76006.png)
(2)设
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/034ba25825c13725931c483aa47c9363.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b3744e71abf4b43e128eabea9181b712.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/57ef6d44448092ebdb9e4a49d866a749.png)
①若
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b80701237101561e4ec3d0ab23199bc7.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/57ef6d44448092ebdb9e4a49d866a749.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b6a24198bd04c29321ae5dc5a28fe421.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/08eb71ecf8d733b6932f4680874dbbf3.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/220e4624092eced325989465266ac2a6.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b6a24198bd04c29321ae5dc5a28fe421.png)
②若
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/dea9a4259cca10c1f5af28e621ebafd6.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/57ef6d44448092ebdb9e4a49d866a749.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/cc2853db0b85e810be7d37f2643c132a.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/034ba25825c13725931c483aa47c9363.png)
您最近一年使用:0次
2024-03-21更新
|
811次组卷
|
5卷引用:黑龙江省双鸭山市第三十一中学等校2024届高三第二次模拟数学试题
7 . 二进制数是用0和1表示的数,它的基数为2,进位规则是“逢二进一”,借位规则是“借一当二”,二进制数
(
)对应的十进制数记为
,即
其中
,
,则在
中恰好有2个0的所有二进制数
对应的十进制数的总和为( )
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7dc67c44ee56d212e321d009647ab945.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/19248c4252fabfaf0d55c96985d79989.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/bc9369d6e6f9022be0f24b7e0c7f86d3.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5f9357d4176e0bb37e26897e7946b528.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/05250abe6da85eb0b555948d7dbaf317.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/489340c9a2d70c00bae13b7018cad448.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/99e15a976f0109e308a61012431d9778.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/748c4f2d1653f946a5f81024643881ee.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/47042681f994e3432bc00024d1631bf8.png)
A.1910 | B.1990 | C.12252 | D.12523 |
您最近一年使用:0次
2022-09-06更新
|
1550次组卷
|
5卷引用:北京市第五十五中2023-2024学年高二下学期期中调研数学试卷
8 . 已知数列
的首项为1,前n项和为
,且
,其中
.
(1)求证:数列
是等比数列;
(2)当
时,求证:
.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/83cf38189d5cbf627d2b82ac0eb76006.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/08eb71ecf8d733b6932f4680874dbbf3.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a1353caf4915fd851985cd31f2fa5a1b.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0704f453b2de48d36911f7db496bbf82.png)
(1)求证:数列
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/83cf38189d5cbf627d2b82ac0eb76006.png)
(2)当
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0704f453b2de48d36911f7db496bbf82.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4033bbf4217ff13b7c98359f109f3f29.png)
您最近一年使用:0次
名校
解题方法
9 . 已知数列
满足:①
;②
.则
的通项公式![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e3f7fda69e2b32b9ced2239f915fa59b.png)
______ ;设
为
的前
项和,则![](https://staticzujuan.xkw.com/quesimg/Upload/formula/9b2778e2dadff4d91102e6046bb5def8.png)
______ .(结果用指数幂表示)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/83cf38189d5cbf627d2b82ac0eb76006.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f6065aaa8f3f103d1bc960da8318ce35.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c7c267dddfb8760f1eafd7c814b9d6bf.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/83cf38189d5cbf627d2b82ac0eb76006.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e3f7fda69e2b32b9ced2239f915fa59b.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/08eb71ecf8d733b6932f4680874dbbf3.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/83cf38189d5cbf627d2b82ac0eb76006.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b6a24198bd04c29321ae5dc5a28fe421.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/9b2778e2dadff4d91102e6046bb5def8.png)
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10 . 十九世纪下半叶集合论的创立,奠定了现代数学的基础,著名的“康托三分集”是数学理性思维的构造产物,具有典型的分形特征,其操作过程如下:将闭区间[0,1]均分为三段,去掉中间的区间段
,记为第1次操作;再将剩下的两个区间
,
分别均分为三段,并各自去掉中间的区间段,记为第2次操作...;每次操作都在上一次操作的基础上,将剩下的各个区间分别均分为三段,同样各自去掉中间的区间段:操作过程不断地进行下去,剩下的区间集合即是“康托三分集”,第三次操作后,依次从左到右第三个区间为___________ ,若使前n次操作去掉的所有区间长度之和不小于
,则需要操作的次数n的最小值为____________ .(
,
)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7f5788219e1b572a03b7453968ad25f4.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d3721aa05c3bf03ee8e92c7fd7a0b48c.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/54cba28de35bd3365c48013aa2889a82.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4c130d40d975aba491541d1a823b509c.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/49f8340ff8ef6994abddab919418423b.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4b0deba532a99234201dd24b23a1b9fc.png)
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2022-05-11更新
|
1589次组卷
|
4卷引用:压轴题03不等式压轴题13题型汇总-2
(已下线)压轴题03不等式压轴题13题型汇总-2山东省德州市2022届高考二模数学试题(已下线)模块八 专题8 以数学文化新情景为背景的压轴题江苏省连云港市赣榆高级中学2022-2023学年高三上学期10月学情检测数学试题