1 . 已知数列
满足
为等比数列.
(1)证明:
是等差数列,并求出
的通项公式.
(2)求
的前
项和为
.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/83cf38189d5cbf627d2b82ac0eb76006.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2139b74106b0d82f2c0ae6b4ae24f078.png)
(1)证明:
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/514fba0a06894045618fad05e8d7dc30.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/83cf38189d5cbf627d2b82ac0eb76006.png)
(2)求
![](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)
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13卷引用:江苏省南京市第一中学2022-2023学年高三上学期10月质量检测数学试题
江苏省南京市第一中学2022-2023学年高三上学期10月质量检测数学试题湖南省部分学校2022-2023学年高三上学期10月联考数学试题河南省创新发展联盟2022-2023学年高三上学期阶段性考试(五)数学(文)试题河南省创新发展联盟2022-2023学年高三上学期阶段性考试(五)数学(理)试题广东省多校2023届高三上学期10月联考数学试题河南省驻马店市部分重点中学2022-2023学年高三上学期阶段性检测数学(文科)试题山西省三晋名校联盟2023届高三上学期阶段性(二)数学试题河南省驻马店市部分重点中学2022-2023学年高三上学期阶段性检测数学(理科)试题山西省忻州市2023届高三上学期10月联考数学试题江苏省常州市第一中学2022-2023学年高二上学期期末数学试题贵州省毕节市金沙县2023届高三上学期期中教学质量检测数学(理)试题宁夏银川市贺兰县景博中学2022-2023学年高二上学期期中考试数学试题(理)山西省大同市煤矿第二中学校2023届高三第四次模拟考试数学试卷
名校
2 . 已知等差数列
中,
,
,则
与
的等差中项为__________ .
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/83cf38189d5cbf627d2b82ac0eb76006.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/9c9b6e51986fe5d7a7265e0e93adcb4d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/68a1b054db0c1881b741b5dc6ef2b488.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f65fc200f10b97588a0c9896277c9c64.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0e84c30444f13d37ada78285dc4f83b7.png)
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名校
解题方法
3 . 已知等差数列
的前
项和为
,
,
.正项等比数列
中,
,
.
(1)求
与
的通项公式;
(2)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/039e4fe671d61e59b96ee525c9df43e8.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a9e43ab50c55608511084eba8023486b.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/034ba25825c13725931c483aa47c9363.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/385275d29d8c8a7841eaeaa3dfab2cdb.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7ff86be56090d576aad0c0945a6bd2bd.png)
(1)求
![](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/aec4bdc2a6d4fc387dc621f0b5a268c5.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b6a24198bd04c29321ae5dc5a28fe421.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f1ae9a3b0b7aeb1545b65d91aa371b3c.png)
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江苏省南京师范大学苏州实验学校2022-2023学年高二日新班上学期9月月考数学试题江苏省镇江市扬中市第二高级中学2023-2024学年高三上学期诊断性测试数学试题江苏省南京市第一中学2023届高三上学期第一次模拟考试数学试题江苏省泰州中学2022-2023学年高三上学期期初调研考试数学试题(已下线)4.3 等比数列(3)宁夏石嘴山市第一中学2023届高三第三次月考数学(理)试题河南省郑州市第二高级中学2022-2023学年高二下学期5月月考数学试题湖南省三湘名校教育联盟、五市十校教研教改共同体2021-2022学年高二下学期期末数学试题黑龙江省哈尔滨市尚志市尚志中学2022-2023学年高三上学期期中数学试题福建省福州第一中学2022-2023学年高二下学期第三学段模块考试(期中)数学试题(已下线)第7讲 数列求和9种常见题型总结 (1)山西省朔州市怀仁市2022-2023学年高二下学期期末数学试题
4 . 已知数列
满足
,且
.
(1)求
及数列
的前
项和
;
(2)记
,数列
的前
项和为
,求
.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b28ef6f1b2279af482557a8ea46f2e43.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b065334d8f60c49f4bd3d9f1373fe4cd.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/88aa6853f8b30d732fe21201d3b2ffeb.png)
(1)求
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/96abfe2da27a63e6affb19a0c80236d9.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b28ef6f1b2279af482557a8ea46f2e43.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a425978da20cebf8c4c63953579e7b35.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/08eb71ecf8d733b6932f4680874dbbf3.png)
(2)记
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e91f854660c34bda03932b59319b7bc0.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/195431ccf2756a0db26f14b7b91a32a7.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a425978da20cebf8c4c63953579e7b35.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f1ae9a3b0b7aeb1545b65d91aa371b3c.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d9261c2ba4a22f569f5f9a763e89f6f3.png)
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解题方法
5 . 已知各项都为正数的数列
的前
项和为
,且对任意的
,都有
其中
,且
为常数
,记数列
的前
项和为![](https://staticzujuan.xkw.com/quesimg/Upload/formula/87bd7d18f67e90a7c37fad4252e43c9d.png)
(1)求数列
的通项公式及![](https://staticzujuan.xkw.com/quesimg/Upload/formula/87bd7d18f67e90a7c37fad4252e43c9d.png)
(2)当
时,将数列
的前
项抽去其中一项后,剩下三项按原来的顺序恰为等比数列
的前
项,记
的前
项和为
,若存在
,使得对任意
,总有
恒成立,求实数
的取值范围
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b28ef6f1b2279af482557a8ea46f2e43.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a425978da20cebf8c4c63953579e7b35.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/08eb71ecf8d733b6932f4680874dbbf3.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/76ad4897a05a6a26b10e2d8379137fa1.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ee2d36314ff4390fbe4052a3a214b8a5.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/43fb4f17f793156e8fcb7bd05665fce2.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e434d52b7741e42c21c2785eb07ffcaf.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/06c07261d97255c5c1017a3a700d29ba.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4f7b5fc36f8384e299a7e5a347410b03.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a425978da20cebf8c4c63953579e7b35.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/87bd7d18f67e90a7c37fad4252e43c9d.png)
(1)求数列
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b28ef6f1b2279af482557a8ea46f2e43.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/87bd7d18f67e90a7c37fad4252e43c9d.png)
(2)当
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/3c06a52a4aa41543d2faaf7903043b74.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b8bf51b2c8c6d0c0d7f7c2470c58ce29.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d87d696d9bf311bddb74b915fb3e9506.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/195431ccf2756a0db26f14b7b91a32a7.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a25b2bbf7e0d8ad8306348d9057671f1.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/195431ccf2756a0db26f14b7b91a32a7.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/3ab4717e4827480f0f6f4ded85e52eab.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f7e74be91bfe4bc209da7539dbf9b72c.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/8c90806629826dc67bff7dc5fe5ebd8a.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/76ad4897a05a6a26b10e2d8379137fa1.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ecd67e7b8b9c600a6f574495045de391.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a9faeed172ec5b88966b0d1c52748d41.png)
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解题方法
6 . 已知数列
满足
,
,则数列
的通项公式为___________ .
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b28ef6f1b2279af482557a8ea46f2e43.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/13212f33c0eeb6479967f58bba664d23.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/853eace02560e7f1490694276c29a856.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b28ef6f1b2279af482557a8ea46f2e43.png)
您最近一年使用:0次
名校
解题方法
7 . 已知等差数列
中
.
(1)求数列
的通项公式;
(2)若
,是否存在正整数m,使得
,若存在,求出m的值;若不存在,说明理由.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b28ef6f1b2279af482557a8ea46f2e43.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/1ada122c0643c67d9bf426196a2335a7.png)
(1)求数列
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b28ef6f1b2279af482557a8ea46f2e43.png)
(2)若
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/9c99c5c187599d0f37014a40a4499469.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/9dc1b3e3406428d1194b9fd1ff070705.png)
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431次组卷
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4卷引用:江苏省苏州市常熟市王淦昌高级中学2022-2023学年高二上学期10月月考数学试题
江苏省苏州市常熟市王淦昌高级中学2022-2023学年高二上学期10月月考数学试题浙江省平湖市当湖高级中学2022-2023学年高二上学期12月阶段测试数学试题(已下线)4.2.1-4.2.2 等差数列的概念和通项公式-2022-2023学年高二数学《基础·重点·难点 》全面题型高分突破(苏教版2019选择性必修第一册)甘肃省古浪县第三中学2022-2023学年高二下学期开学考试数学试题
8 . 已知数列
满足
,
.
(1)求数列
的通项公式;
(2)若记
为满足不等式
的正整数
的个数,求数列
的前
项和为
,求关于
的不等式
的最大正整数解.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/83cf38189d5cbf627d2b82ac0eb76006.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b89b6d8e45f3d627ec76cd469f9d01d7.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/853eace02560e7f1490694276c29a856.png)
(1)求数列
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/83cf38189d5cbf627d2b82ac0eb76006.png)
(2)若记
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/686ece75006ad358f23314dc8a246e11.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e4ecd9d0d50772b2c84f242a8887dc74.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f0a532e15e232cb4b99a8d4d07c89575.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a9a6c852d593cb9f6bdfd9eeddb50fa3.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/b6a24198bd04c29321ae5dc5a28fe421.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ba4796ab389935d763a3db9a012d1df3.png)
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4卷引用:江苏省苏州中学2022-2023学年高二上学期10月月考数学试题
江苏省苏州中学2022-2023学年高二上学期10月月考数学试题(已下线)第4章 数列(A卷·知识通关练) (2)吉林省通化市辉南县第六中学2022-2023学年高二上学期期中数学试题(已下线)4.2.1等差数列的概念(第1课时)(分层作业)-【上好课】2022-2023学年高二数学同步备课系列(人教A版2019选择性必修第二册)
9 . 函数
(k为常数,
且
).以下结论正确的是( )
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/466cfb245dfad4b25b42a4308a2106b7.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/dc484768bb08d239b2098ed2408e757f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d913bf9fbb77041336f246bfca471ae4.png)
A.若![]() ![]() |
B.若![]() ![]() |
C.若![]() ![]() |
D.若![]() ![]() |
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6卷引用:江苏省常州市金坛区2022-2023学年高三上学期阶段性质量检测一数学试题
10 . 已知数列
各项均为正数,且
.
(1)求
的通项公式;
(2)记数列
前
项的和
,证明:
.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/83cf38189d5cbf627d2b82ac0eb76006.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2c3eb4585f66a4e5c50c464df8364f7d.png)
(1)求
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/83cf38189d5cbf627d2b82ac0eb76006.png)
(2)记数列
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/667467e32bbaf18ca017d449b7e22f09.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/c25050141109b602ca16db9ca5e31bcc.png)
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