名校
1 . 若数列
是等差数列,且
,则
( )
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/63d471926f7b27322d90c82b9ce21d3d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5ce2d03b64e6ceead9db069da95ec3b6.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e3307c60261fc079f584347a8d404551.png)
A.48 | B.50 | C.52 | D.54 |
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2024-02-20更新
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3卷引用:云南省玉溪第一中学2023-2024学年高二下学期开学考试数学试卷
名校
2 . 设无穷数列
为正项等差数列且其前n项和为
,若
,则下列判断正确的是( )
![](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/8dd6ed297120e5125ca2c9f3a444bb38.png)
A.![]() | B.![]() | C.![]() | D.![]() |
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2023-05-06更新
|
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4卷引用:广东省佛山市高明区第一中学2022-2023学年高二下学期3月教学质量检测数学试题
广东省佛山市高明区第一中学2022-2023学年高二下学期3月教学质量检测数学试题(已下线)专题4.2 等差数列(5个考点八大题型)(2)山西省阳泉市2023届高三三模数学试题(已下线)专题08 数列
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3 . 已知首项为
,公比为
的等比数列
,其前
项和为
,
,且
,
,
成等差数列,记
,
,则( )
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a4b8503f4706b8321e4e79a87eadea84.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/9aa8a716a31b0f51b70fdf9bdb257909.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/48f093c61867ee4ce75f951d46b9b123.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/28c40980226328591a49bf85b56b9562.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e02b512e23eadd2810ab21e2e993b712.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/3272ce4d31d66c1d408225b997e3a73d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2540c7bc6f571426c23ddfb203ce2700.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/48f093c61867ee4ce75f951d46b9b123.png)
A.公比![]() |
B.若![]() ![]() |
C.若![]() ![]() ![]() |
D.若![]() ![]() ![]() |
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2023-05-19更新
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2卷引用:湖北省武汉市常青联合体2022-2023学年高二下学期期中数学试题
2023·全国·模拟预测
解题方法
4 . 已知数列
的前n项和为
,
,
,且![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a5024dd48c4ad70762603e11b6db8e6c.png)
,
.
(1)求证:数列
是等比数列.
(2)判断是否存在正整数p,q,r(
)使得
,
,
成等差数列.若存在,求出p,q,r的一组值;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/08eb71ecf8d733b6932f4680874dbbf3.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b13a6e1d671215fc96e4bee3541d1096.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7def23f30138e0b7c4c1e498d6903a6c.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a5024dd48c4ad70762603e11b6db8e6c.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/8bd048fe3fbd6b0623f146a0ef9021e1.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f3dfd9c20a258bcb6336a129cf4884b3.png)
(1)求证:数列
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/034ba25825c13725931c483aa47c9363.png)
(2)判断是否存在正整数p,q,r(
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/60e07691b80d32fe984e16556a1fb6c8.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/de009d9df65374c870a4012cf5db28df.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/aea1c4dbaa86b30ab267bac405ec45be.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5566b1d828acdac47fe50216d247cfac.png)
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2023-11-20更新
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7卷引用:模块一 专题6《数列的通项公式与求和问题》单元检测篇 B提升卷
(已下线)模块一 专题6《数列的通项公式与求和问题》单元检测篇 B提升卷(已下线)模块一专题2《数列的通项公式与求和》单元检测篇B提升卷(高二人教B版)(已下线)模块一 专题3《数列的通项公式与求和》单元检测篇B提升卷(高二北师大版)(已下线)2024年普通高等学校招生全国统一考试·信息卷理科数学(三)(已下线)2024年普通高等学校招生全国同一考试·信息卷文科数学(五)(已下线)高考2024年普通高等学校招生全国统一考试?信息卷数学(六)(已下线)专题09 数列的通项公式、数列求和及综合应用(9大核心考点)(讲义)
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5 . 已知数列
的前
项和为
,则下列说法正确的是( )
![](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)
A.若![]() ![]() |
B.若![]() ![]() ![]() |
C.若数列![]() ![]() ![]() ![]() |
D.若数列![]() ![]() ![]() ![]() ![]() |
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|
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|
2卷引用:山东师范大学附属中学2022-2023学年高二上学期期末数学试题
名校
6 . 正项等比数列
中,
是
与
的等差中项,若
,则
( )
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/83cf38189d5cbf627d2b82ac0eb76006.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/73f6aba03136f0c6d7c4de8f2a6e63b9.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f65fc200f10b97588a0c9896277c9c64.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/8c001508aa9f2c46e55dfd1c4d99d34d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ca4123422b5a6621da6a3214aa8c3e2a.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e3e3cd7b1cb03860f90838500d905eea.png)
A.4 | B.8 | C.32 | D.64 |
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解题方法
7 . 已知等比数列
的公比大于1,且
,等差数列
满足
,
,
,则
( )
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/83cf38189d5cbf627d2b82ac0eb76006.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d086903739de96e222c37625a2b15716.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/034ba25825c13725931c483aa47c9363.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b5c340fdadffa2f9120a70430ce477f8.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d1dbb32c098bc0006e1c854a9579e0b5.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2cc3f14c2e64c1bae16530c56dc46e89.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/39308f0896dc31d98b1276e974e3019c.png)
A.2026 | B.4050 | C.4052 | D.4054 |
您最近一年使用:0次
名校
8 . 设数列
是公差为
等差数列,
为其前n项和,
,且
,则( )
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/83cf38189d5cbf627d2b82ac0eb76006.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5c02bc0c74292b1e8f395f90935d3174.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/08eb71ecf8d733b6932f4680874dbbf3.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/179513ce80436471efbe1d9b31735f7d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/896ea3ab75b52d8fa099263d10638af6.png)
A.![]() | B.![]() | C.![]() | D.![]() ![]() ![]() |
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2022-11-09更新
|
1247次组卷
|
2卷引用:浙江省嘉兴市第一中学2022-2023学年高二上学期期中数学试题
解题方法
9 . 已知正项数列
的前n项和为
,现在有以下2个条件:
①数列
的前n项和为
;②
,![](https://staticzujuan.xkw.com/quesimg/Upload/formula/6faa9ef73239d79de3c4c42ef73dafa2.png)
从上述2个条件中任选一个,完成以下问题:
(1)求数列
的通项公式;
(2)设数列
满足
,
,试问
中是否存在连续三项
,
,
,使得
,
,
构成等差数列?请说明理由.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/83cf38189d5cbf627d2b82ac0eb76006.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/08eb71ecf8d733b6932f4680874dbbf3.png)
①数列
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/362832fa3d3c13c1eafd565349d66dce.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b56e1b42965b42bb908cb6083cb04f6f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b065334d8f60c49f4bd3d9f1373fe4cd.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/6faa9ef73239d79de3c4c42ef73dafa2.png)
从上述2个条件中任选一个,完成以下问题:
(1)求数列
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/83cf38189d5cbf627d2b82ac0eb76006.png)
(2)设数列
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/034ba25825c13725931c483aa47c9363.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/59dd6c97d2ee3e74ba5730f1cbcc1d43.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e0cc4d92d416e63b67668cc0b5b6fb8f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/034ba25825c13725931c483aa47c9363.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/233427826eb2233641fc3a9805f6d206.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/51f0264a379802edcf7d2a030f02606e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d4307612e3c7d714d021a93650f9dc0e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e1f7d994678014ddede60b41dc43457d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/dd76368ccddb112e99ca57b26406c1e2.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/70b483fd4a903141ebc6a07322022725.png)
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10 . 已知各项均为正数的等比数列
的前n项和为
,若
,
,
成等差数列,且
.
(1)求
;
(2)若
,求数列
的前n项和
.
![](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/e72adb45c60c2f63b46e65ff787302bf.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5b6fae41755ecb64ac239a5a2d767354.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/3e88093a749c0d46e0ee931ecfaff925.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/22ab4706be6b3854b9c30ab609e5da68.png)
(1)求
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/96abfe2da27a63e6affb19a0c80236d9.png)
(2)若
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/41d527d9b8c65ce00307c68d93bfeaec.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5da72309d2507e2f5e5ed88d8cc08963.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f1ae9a3b0b7aeb1545b65d91aa371b3c.png)
您最近一年使用:0次