1 . 已知
为等差数列,公差
,且
、
、
成等比数列.
(1)求数列
的通项公式;
(2)记
,数列
的前
项和为
,证明:
.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/83cf38189d5cbf627d2b82ac0eb76006.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c5c1344592c925b273f2cb9b9e47ebbb.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/f65fc200f10b97588a0c9896277c9c64.png)
(1)求数列
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/83cf38189d5cbf627d2b82ac0eb76006.png)
(2)记
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d005409790b3192705a181b2c8e7dfed.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/034ba25825c13725931c483aa47c9363.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/fc1f5d407c0e99344ed5f0f5926c5d22.png)
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6卷引用:黑龙江省大庆市大庆中学2023-2024学年高二下学期4月月考数学试题
2 . 在①
,②
,③
这三个条件中选择两个,补充在下面问题中,并进行解答.已知等差数列
的前
项和为
,
, , .
(1)求数列
的通项公式;
(2)设
,证明数列
的前
项和
.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/6e0f78ff79e35f9b7d63a4e9add024a6.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ea5cc09a66cb35ef1ee5fce4dd3da8ca.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/3c3dccfb33f33003da912587645d9569.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/930bc56406e69b785b37a83d48e36724.png)
(1)求数列
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/83cf38189d5cbf627d2b82ac0eb76006.png)
(2)设
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/216876de04325fd250c38c485cbc34b7.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/034ba25825c13725931c483aa47c9363.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b6a24198bd04c29321ae5dc5a28fe421.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f9928e46511e601913619a427ded84a3.png)
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名校
解题方法
3 . 已知
为等差数列
的前n项和,
,
.
(1)求
的通项公式;
(2)若
,
的前n项和为
,证明:
.
![](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/d046ec9d9aaac508a16462f2980ca18b.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/9651204c54475c2e8cda8d0a6eeba177.png)
(1)求
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/83cf38189d5cbf627d2b82ac0eb76006.png)
(2)若
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/216876de04325fd250c38c485cbc34b7.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/034ba25825c13725931c483aa47c9363.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f1ae9a3b0b7aeb1545b65d91aa371b3c.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/aa33d6f116c61ab89224c1a9886861cd.png)
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名校
解题方法
4 . 求解下列问题:
(1)已知等差数列
中,
,
,
,求
及
;
(2)已知数列
的前
项和为
,且
,求证:
为等比数列.
(1)已知等差数列
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/83cf38189d5cbf627d2b82ac0eb76006.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/dc2af79f17ef596c04991f4c13cd1955.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c09ee990503e5b3608267fbd91cf16d2.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/8000007201d28a54901c28b9feb6f62d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b6a24198bd04c29321ae5dc5a28fe421.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/96abfe2da27a63e6affb19a0c80236d9.png)
(2)已知数列
![](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/da50e2ca8ac5634403345a58717bb539.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/83cf38189d5cbf627d2b82ac0eb76006.png)
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5 . 已知数列
为等差数列,数列
满足
,且
.
(1)求
的通项公式;
(2)证明:
.
![](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/645632993919a478110143f27480d185.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/26109292be1cbf6eb1bd43995cd4d772.png)
(1)求
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/62e567d7e9761951a266953c8d5042ac.png)
(2)证明:
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c28cddcac936845bef908815aed4d685.png)
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名校
解题方法
6 . 已知等差数列
的前
项和为
,
,
.
(1)求
的通项公式;
(2)证明:
.
![](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/878c70d9a2c8da673f5cb88d26f7d16c.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/caf9f45329bae09f13ebc5a7fd2788a5.png)
(1)求
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/83cf38189d5cbf627d2b82ac0eb76006.png)
(2)证明:
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c83dfb450d025aa482277a23dae8203b.png)
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名校
解题方法
7 . 已知等差数列
中,
,
,设
.
(1)求证:数列
是等比数列;
(2)求数列
的前n项和.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/83cf38189d5cbf627d2b82ac0eb76006.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/039e4fe671d61e59b96ee525c9df43e8.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/9e71f3e125f8b74d6e18d636f27f83cc.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/95e191086446263b7bbbd93613577c42.png)
(1)求证:数列
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/034ba25825c13725931c483aa47c9363.png)
(2)求数列
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5344eadd4711db34e3f935aedd5fb270.png)
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黑龙江哈尔滨工业大学附属中学校 2021-2022学年高二下学期期末文科数学试题北京市顺义牛栏山第一中学2021-2022学年高二6月数学定时检测试题(已下线)4.3.2等比数列的前n项和公式(第1课时)(分层作业)(3种题型)-【上好课】高二数学同步备课系列(人教A版2019选择性必修第二册)四川省广元市川师大万达中学2023-2024学年高二下学期3月月考数学试题
真题
名校
8 . 已知
为等差数列,
是公比为2的等比数列,且
.
(1)证明:
;
(2)求集合
中元素个数.
![](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/9577321bd85f232a0fecb06639171e90.png)
(1)证明:
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/89fe0f4e8a80a2840c0f6929a8a6351b.png)
(2)求集合
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d12c9b3dc055abe40ec9ff2b09d1dbe2.png)
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黑龙江省哈尔滨市德强高级中学2022-2023学年高三上学期1月阶段性测试数学试卷2022年新高考全国II卷数学真题(已下线)2022年全国新高考II卷数学试题变式题9-12题(已下线)第5讲 数列与不等式(已下线)专题21 等比数列-2023届高考数学一轮复习精讲精练(新高考专用)(已下线)专题06 数列解答题(已下线)专题05 数列解答题(已下线)第02讲 等差数列及前n项和(练)(已下线)第03讲 等比数列及前n项和(练)(已下线)2022年全国新高考II卷数学试题变式题17-19题上海市洋泾中学2023届高三上学期开学考试数学试题(已下线)考向19等差数列及其前n项和(重点) - 1(已下线)考向20等比数列及其前n项和(重点)-1(已下线)专题5 2022年高考“数列”专题命题分析(已下线)专题2 2022年高考“集合、常用逻辑用语、不等式”专题解题分析(已下线)专题04 数列的通项、求和及综合应用(精讲精练)-1上海市市北中学2023届高三上学期10月月考数学试题安徽省教育厅2023届高三老高考新课标题型示例数学试题(已下线)专题5 数列 第1讲 等差数列、等比数列(已下线)1.2.1等差数列的概念及其通项公式同步课时训练-2022-2023学年高二下学期数学北师大版(2019)选择性必修第二册(已下线)专题25 等比数列及其前n项和-3(已下线)重组卷02(已下线)重组卷02(已下线)押新高考第18题 数列综合(已下线)专题6-2 数列大题综合18种题型(讲+练)-1(已下线)拓展五:近五年数列高考真题分类汇编(1)广东省广州科学城中学2023届高三下学期5月月考数学试题江苏省镇江中学2023届高三下学期3月大练1数学试题专题05数列(成品)专题05数列(添加试题分类成品)(已下线)模块三 专题7 数列--拔高能力练(北师大2019版 高二)(已下线)模块三 专题6 数列--拔高能力练(人教B版高二)第一章 数列 能力提升卷(二)(已下线)专题07 数列-1(已下线)第三节 等比数列 核心考点集训4.3.1 等比数列的概念练习(已下线)考点7 等差、等比数列的联姻 2024届高考数学考点总动员(已下线)专题05 等比数列与数列综合求和-2023-2024学年高二数学期末复习重难培优与单元检测(人教A版2019)湖南省衡阳市第八中学2023-2024学年高二创新班上学期第二阶段测试数学试题(已下线)专题04 数列及求和(讲义)(已下线)重难点03:数列近3年高考真题赏析-2023-2024学年高二数学同步精品课堂(北师大版2019选择性必修第二册)(已下线)专题29 等差数列通项与前n项和(已下线)专题06:数列大题真题精练(已下线)专题21 数列解答题(文科)-3(已下线)专题21 数列解答题(理科)-4专题06数列
9 . 已知等差数列
的前
项和为
,
,
.
(1)求
的通项公式;
(2)设
,求证:数列
是等比数列,并求数列
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/fc62d74538fa13db4f3cfcc3c191fd7d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0a5a2404f0165c7a6b170da2ff68b37a.png)
(1)求
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/83cf38189d5cbf627d2b82ac0eb76006.png)
(2)设
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/95e191086446263b7bbbd93613577c42.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/034ba25825c13725931c483aa47c9363.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/034ba25825c13725931c483aa47c9363.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b6a24198bd04c29321ae5dc5a28fe421.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f1ae9a3b0b7aeb1545b65d91aa371b3c.png)
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名校
10 . 已知等差数列
的公差为
,前
项和为
,且
成等比数列.
(1)求数列
的通项公式;
(2)设
,数列
前
项和为
,求证:
.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b4be2164a2c67d6163faee87a10942bb.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/61128ab996360a038e6e64d82fcba004.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/4f8aa010f7105f3ca426c8a34880abd2.png)
(1)求数列
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b4be2164a2c67d6163faee87a10942bb.png)
(2)设
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b58afc025a97d00d3f4956fb31713a84.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/43b7e7cd571c8cd141cbbfe5d0890bf6.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/c215db1d8f69757118ad405b78035628.png)
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