名校
1 . 已知数列
,
都是等差数列,且
,
,则
( )
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/83cf38189d5cbf627d2b82ac0eb76006.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/034ba25825c13725931c483aa47c9363.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d971e1059bbca30744aec6d1ec9bbd42.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/25520d35dbb048f96b77d3e6e14ea083.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/6583e7f62a6be7f8023453db2968190e.png)
A.![]() | B.![]() | C.1 | D.2 |
您最近一年使用:0次
2022-07-03更新
|
1348次组卷
|
7卷引用:天津市南开区2023-2024学年高二上学期阶段性质量监测(二)数学试题
天津市南开区2023-2024学年高二上学期阶段性质量监测(二)数学试题河南省开封市2021-2022学年高二下学期期末数学文科试题河南省开封市2021-2022学年高二下学期期末数学理科试题(已下线)4.2.1 等差数列的概念 (精讲)-【题型分类归纳】2022-2023学年高二数学同步讲与练(人教A版2019选择性必修第二册)1.2.2 等差数列与一次函数(同步练习基础版)福建省宁德第一中学2023-2024学年高二上学期9月月考数学试题(已下线)专题24 等差数列及其前n项和-1
解题方法
2 . 已知等差数列
的公差为2,其前
项和为
,若
是
与
的等比中项,则
等于( )
![](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/08eb71ecf8d733b6932f4680874dbbf3.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/3e88093a749c0d46e0ee931ecfaff925.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e72adb45c60c2f63b46e65ff787302bf.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f65fc200f10b97588a0c9896277c9c64.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/194592cb77de8a597d5d64e1c85c3249.png)
A.108 | B.64 | C.49 | D.48 |
您最近一年使用:0次
名校
3 . 设
是公差
的等差数列,如果
,那么
( )
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/83cf38189d5cbf627d2b82ac0eb76006.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/fc807ea4b8a7ed325aee49aa292552ff.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/6345c4db57be1d4ae6a200ac1b462a3d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/640bdc4b37a9ae42a1d96d452e605b6f.png)
A.![]() | B.![]() | C.![]() | D.![]() |
您最近一年使用:0次
2022-03-16更新
|
1413次组卷
|
5卷引用:天津市南开中学2021-2022学年高二上学期期末数学试题
名校
解题方法
4 . 北京天坛圜丘坛的地面由石板铺成,最中间的是圆形的天心石,围绕天心石的是9圈扇环形的石板,从内到外各圈的石板数依次为
,设数列
为等差数列,它的前
项和为
,且
,
,则
( )
![](https://img.xkw.com/dksih/QBM/2022/1/13/2893775135039488/2896413231554560/STEM/ac649898-e62a-41c0-842a-042834838567.png?resizew=472)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4832bb09c71bcb19b44a5394f30f2b98.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/08eb71ecf8d733b6932f4680874dbbf3.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/039e449a6d9e76e0497bf2672740f801.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/68b9eba619fd20aa0f1b94f439e8c6fb.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ae9ad4e59d7081cf19021423a984bc29.png)
![](https://img.xkw.com/dksih/QBM/2022/1/13/2893775135039488/2896413231554560/STEM/ac649898-e62a-41c0-842a-042834838567.png?resizew=472)
A.189 | B.252 | C.324 | D.405 |
您最近一年使用:0次
2022-01-17更新
|
1414次组卷
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14卷引用:天津市北辰区南仓中学2023-2024学年高二上学期第二次月考数学试题
天津市北辰区南仓中学2023-2024学年高二上学期第二次月考数学试题吉林省白城市通榆县第一中学校2022-2023学年高二上学期期末数学试题甘肃青海大联考2021-2022学年高三上学期文科数学试题吉林省白山市2021-2022学年高三上学期期末考试数学(文)试题全国一卷老高考地区部分学校2021-2022学年高三上学期1月联考理科数学试题陕西省2022届高三上学期元月联考理科数学试题新疆昌吉州2022届高三上学期第二次高考质量检测数学(文)试题新疆昌吉州2022届高三上学期第二次高考质量检测数学(理)试题甘肃省白银市靖远县2021-2022学年高三上学期期末考试数学(理)试题甘肃省白银市靖远县2021-2022学年高三上学期期末考试数学(文)试题广西桂林市、梧州市2022届高三高考联合调研(一模)数学(理)试题广西桂林市、梧州市2022届高三高考联合调研(一模)数学(文)试题四川省凉山州宁南中学2021-2022学年高一下学期第二次月考数学(文)试题(已下线)考向19等差数列及其前n项和(重点)-2
名校
解题方法
5 . 若等差数列的前
项和为
,数列
是等比数列,并且
,
,
,
,
.
(1)求数列
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/83cf38189d5cbf627d2b82ac0eb76006.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/034ba25825c13725931c483aa47c9363.png)
(2)若
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/59693a58b316b5b3ef284b4c644a3eba.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/6ddad3d9fdb5e9951b6a1c31f9a72a71.png)
您最近一年使用:0次
6 . 已知{
}为等差数列,前n项和为
(
),{
}是首项为2的等比数列,且公比大于0,
,
,
.
(1)求{
}和{
}的通项公式;
(2)求数列
}的前n项和
;
(3)设
,
为数列
的前n项和,求不超过
的最大整数m.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/96abfe2da27a63e6affb19a0c80236d9.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/08eb71ecf8d733b6932f4680874dbbf3.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/46c39b984e70553acb2da1012e26ba36.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/686ece75006ad358f23314dc8a246e11.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7ff86be56090d576aad0c0945a6bd2bd.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/dbaed111f759d66a140168905f2026b5.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/1fb0344eb6d3543a6c80803e85f60b26.png)
(1)求{
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/96abfe2da27a63e6affb19a0c80236d9.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/686ece75006ad358f23314dc8a246e11.png)
(2)求数列
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ad4e296016620fc5dac3fcc871183f0d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4e9da2b0e7b9eca965043be2f38a91f1.png)
(3)设
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/46784beb9640fb16c3f69ea298404092.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/bf83e20035c3afd6d26ebfd53d768a70.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/526d983bed8be2c14ce68d22e2a74622.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d3d88909e5fcc68bc96d756f2d65060c.png)
您最近一年使用:0次
7 . 已知正项等差数列
与等比数列
满足
,且
既是
和
的等差中项,又是其等比中项.
(1)求数列
和
的通项公式.
(2)求数列
的前
项和
.
(3)设
,记
的前
项和
.若
对于
且
恒成立,求实数
的取值范围.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/83cf38189d5cbf627d2b82ac0eb76006.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/034ba25825c13725931c483aa47c9363.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7fd3aff210bb73291e9102bdcc0e6066.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/3e88093a749c0d46e0ee931ecfaff925.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ea74a5cf39bd1149aed1ce6c8ba0c895.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/161a7b35d1812e6745ae7f7c540cf87a.png)
(1)求数列
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/83cf38189d5cbf627d2b82ac0eb76006.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/034ba25825c13725931c483aa47c9363.png)
(2)求数列
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ba57c83d526ac308d1461e80fcca9f36.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b6a24198bd04c29321ae5dc5a28fe421.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/08eb71ecf8d733b6932f4680874dbbf3.png)
(3)设
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/015ab2846e43c95c57531067d667066a.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/f1ae9a3b0b7aeb1545b65d91aa371b3c.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7c35dd33419fe7539ee8b59deaa84297.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0704f453b2de48d36911f7db496bbf82.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/930bc56406e69b785b37a83d48e36724.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/36a1b09c653185842513e24ebba60bb3.png)
您最近一年使用:0次
名校
解题方法
8 . 已知等差数列
的通项公式为
,则其前n项和
取得最大值时,n的值( )
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/83cf38189d5cbf627d2b82ac0eb76006.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/96dd881c9ed09a652eeb86b22d32dfec.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/08eb71ecf8d733b6932f4680874dbbf3.png)
A.6 | B.5 | C.4 | D.3 |
您最近一年使用:0次
2022-12-17更新
|
1076次组卷
|
3卷引用:天津市滨海新区塘沽第一中学2022-2023学年高二上学期期末数学试题
名校
解题方法
9 . 在等差数列
中,
,且
,
,
,构成等比数列,则公差
( )
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/83cf38189d5cbf627d2b82ac0eb76006.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/18d8e8f821111de8075e5c3dfb22a5d6.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e72adb45c60c2f63b46e65ff787302bf.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/6c1ccc6c74b8754e9bcbb3f39a11b6f1.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/bc858b7a95c5006a44067022da09f667.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7c98c59cd4749afdd21e73529fc84323.png)
A.0或2 | B.2 | C.0 | D.0或![]() |
您最近一年使用:0次
2021-11-05更新
|
1701次组卷
|
7卷引用:天津市河西区2021-2022学年高二上学期期末数学试题
天津市河西区2021-2022学年高二上学期期末数学试题湖北省新高考9+N联盟部分重点中学2022届高三上学期11月联考数学试题辽宁省沈阳市第二中学2021-2022学年高三上学期第二次阶段测试数学试题(已下线)专题1.2 模拟卷(2)-2022年高考数学大数据精选模拟卷(新高考地区专用)河北省五校联盟(保定市第一中学等)2022届高三下学期3月模拟数学试题(已下线)专题04 数列(数学思想与方法)-备战2022年高考数学二轮复习重难考点专项突破训练(全国通用)(已下线)三轮冲刺卷06-【赢在高考·黄金20卷】备战2022年高考数学模拟卷(新高考专用)
10 . 已知数列
的前
项和为
,且
,
,数列
是公差不为0的等差数列,满足
,且
,
,
成等比数列.
(1)求数列
和
的通项公式;
(2)设
,求数列
的前
项和
.
![](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/08eb71ecf8d733b6932f4680874dbbf3.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b065334d8f60c49f4bd3d9f1373fe4cd.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b4c7f515d1ea1e58da3f5f424d946819.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/034ba25825c13725931c483aa47c9363.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/eab7d59ce066c8f0b346719003f8e28f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b715e7842b95f654f16056a7c7f2abe9.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/13423c094861baf4b759b7f3d8c3c226.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a548938d87c80ac47910607d3857007f.png)
(1)求数列
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/83cf38189d5cbf627d2b82ac0eb76006.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/034ba25825c13725931c483aa47c9363.png)
(2)设
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/1d44ddab6e0c60119be69985ae7fa65b.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/f1ae9a3b0b7aeb1545b65d91aa371b3c.png)
您最近一年使用:0次