1 . 已知数列
是首项为1的等差数列,数列
是公比不为1的等比数列,且满足
,
,
.
(1)求数列
,
的通项公式;
(2)求
;
(3)令
,记数列
的前
项和为
,求证:对任意的
,都有
.
![](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/84672a737e1ba65228ffd2f0064a8c9b.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/40751e69baead4a0d5bea384aedfa6c1.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0dbe8fa82ab04f0a4ba4ad1c570c9aa1.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
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e5dfaa6e2fb5e7dedb30a0088ffa1c9f.png)
(3)令
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/63767dbd3a4847a197a89f878573c731.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/67ef8539a7a09303a95b4e79fb9949fc.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/e145b6046bc80d0ffecc61ac67c87ca1.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/082dd35c1eebe15ec8d8b060f28cfd98.png)
您最近一年使用:0次
2023-04-17更新
|
1987次组卷
|
2卷引用:天津市七校联考2022-2023学年高三下学期总复习质量调查(一)数学试题
2 . 已知
是单调递增的等差数列,其前
项和为
.
是公比为
的等比数列.
.
(1)求
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/034ba25825c13725931c483aa47c9363.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/9aa8a716a31b0f51b70fdf9bdb257909.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/69cc6db65304d2424d93a1add0540da0.png)
(1)求
![](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/0a4aa026716a11f9f7c0a2339fba4ea2.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
3 . 设
是等差数列,
是等比数列.已知
.
(Ⅰ)求
和
的通项公式;
(Ⅱ)设数列
满足
其中
.
(i)求数列
的通项公式;
(ii)求
.
![](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/1967aa90e732b3e39c1666f8ff4db7e7.png)
(Ⅰ)求
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/83cf38189d5cbf627d2b82ac0eb76006.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/034ba25825c13725931c483aa47c9363.png)
(Ⅱ)设数列
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/57ef6d44448092ebdb9e4a49d866a749.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/54e8470c2a5aa3708590de468bfd8688.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/cad52924df9291d5d191d18e09374ee1.png)
(i)求数列
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a75e0fa828f6148dc4839112042e2a66.png)
(ii)求
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/3b259c23959844c0f89c6fa2dcfa9b9a.png)
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2019-06-09更新
|
10568次组卷
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40卷引用:2019年天津市高考数学试卷(理科)
2019年天津市高考数学试卷(理科)2020届天津市南开中学高三数学开学统练试题天津市十二区县重点学校2023届高三下学期联考(一)考前模拟数学试题专题11数列(已下线)专题08 数列——2019年高考真题和模拟题理科数学分项汇编(已下线)第04讲 数列求和(讲)-《2020年高考一轮复习讲练测》(浙江版)专题6.4 数列求和(讲)【文】—《2020年高考一轮复习讲练测》(已下线)专题6.4 等差、等比数列与数列求和(讲)【理】-《2020年高考一轮复习讲练测》(已下线)专题6.4 数列求和(讲)-江苏版《2020年高考一轮复习讲练测》2020届浙江省杭州市学军中学高三下学期3月月考数学试题(已下线)专题12 数列——三年(2018-2020)高考真题理科数学分项汇编(已下线)专题14 数列综合-五年(2016-2020)高考数学(理)真题分项(已下线)考点20 数列的综合运用-2021年高考数学三年真题与两年模拟考点分类解读(新高考地区专用)(已下线)考点19 数列通项与求和与通项-2021年高考数学三年真题与两年模拟考点分类解读(新高考地区专用)(已下线)专题6.4 数列求和(精讲)-2021届高考数学(文)一轮复习讲练测(已下线)专题7.4 数列求和(讲)-2021年新高考数学一轮复习讲练测(已下线)专题7.4 数列求和(精讲)-2021年新高考数学一轮复习学与练(已下线)专题6.4 数列求和(精讲)-2021年高考数学(文)一轮复习学与练(已下线)专题6.4 数列求和(精讲)-2021年高考数学(理)一轮复习学与练(已下线)专题6.4 数列求和(精讲)-2021届高考数学(理)一轮复习讲练测(已下线)专题09 数列与数学归纳法-2021年浙江省高考数学命题规律大揭秘【学科网名师堂】(已下线)考点40 等差数列及其前n项和-备战2021年新高考数学一轮复习考点一遍过(已下线)考点42 数列求和-备战2021年新高考数学一轮复习考点逐一攻克(已下线)专题4.2 数列-2021年高考数学解答题挑战满分专项训练(新高考地区专用)(已下线)预测07 数列-【临门一脚】2020年高考数学三轮冲刺过关(江苏专用)(已下线)数学-2021年高考考前20天终极冲刺攻略(三)(新高考地区专用)【学科网名师堂】 (6月1日)(已下线)专题7.4 数列求和(讲)- 2022年高考数学一轮复习讲练测(新教材新高考)(已下线)第29讲 数列求和(讲)- 2022年高考数学一轮复习讲练测(课标全国版)人教B版(2019) 选修第三册 突围者 第五章 高考挑战(已下线)专题09 数列-五年(2017-2021)高考数学真题分项(新高考地区专用)(已下线)专题14 盘点数列的前n项和问题——备战2022年高考数学二轮复习常考点专题突破(已下线)2022年高考考前20天终极冲刺攻略(三)【数学】(新高考地区专用)(5月31日)(已下线)第04讲 数列求和(练)(已下线)5.3 数列的求和问题(高考真题素材之十年高考)江苏省盐城市盐城中学2019-2020学年高二上学期10月阶段性考试数学试题(已下线)专题4.3 等比数列-2020-2021学年高二数学同步课堂帮帮帮(人教A版2019选择性必修第二册)苏教版(2019) 选修第一册 突围者 第4章 章末培优专练(已下线)第四章 数列(提高卷)-《阳光测评》2020-2021学年高二数学单元提升卷(人教A版2019选择性必修第二册)苏教版(2019) 选修第一册 一蹴而就 第4章 单元整合人教B版(2019) 选修第三册 一举夺魁 第五章 学科素养提升
4 . 在公差不为0的等差数列
中,
,且
,
,
成等比数列.
(1)求
的通项公式和前n项和
;
(2)设
,求数列
的前n项和公式
.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/83cf38189d5cbf627d2b82ac0eb76006.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7da6e97248df8f138ebe684c40c950c7.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/3e88093a749c0d46e0ee931ecfaff925.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/6c1ccc6c74b8754e9bcbb3f39a11b6f1.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5da4cd81500bdb43118150dbdb1541e6.png)
(1)求
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/83cf38189d5cbf627d2b82ac0eb76006.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/08eb71ecf8d733b6932f4680874dbbf3.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/f1ae9a3b0b7aeb1545b65d91aa371b3c.png)
您最近一年使用:0次
2023-05-11更新
|
1636次组卷
|
7卷引用:天津市西青区为明学校2023-2024学年高三上学期开学测数学试题
5 . 已知数列
是公比
的等比数列,前三项和为13,且
,
,
恰好分别是等差数列
的第一项,第三项,第五项.
(1)求
和
的通项公式;
(2)已知
,数列
满足
,求数列
的前2n项和
;
(3)设
,求数列
的前n项和
.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/83cf38189d5cbf627d2b82ac0eb76006.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/eda6dc559d07bc22c9a0ed1e3a6d01d2.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e72adb45c60c2f63b46e65ff787302bf.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/58b3175ab6772cd611f9c42771a9467d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/6c1ccc6c74b8754e9bcbb3f39a11b6f1.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/034ba25825c13725931c483aa47c9363.png)
(1)求
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/83cf38189d5cbf627d2b82ac0eb76006.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/034ba25825c13725931c483aa47c9363.png)
(2)已知
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/cad52924df9291d5d191d18e09374ee1.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/57ef6d44448092ebdb9e4a49d866a749.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e90c4e8734cf9695378e52862a603900.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/57ef6d44448092ebdb9e4a49d866a749.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/3b9a0d7150fb24be3e28ef7f0e18be93.png)
(3)设
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c910871ff511e1ea952ad66eff1016db.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b783cf91e34e692ce8e171f0965cb53f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f1ae9a3b0b7aeb1545b65d91aa371b3c.png)
您最近一年使用:0次
2022-05-27更新
|
3501次组卷
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12卷引用:天津市南开区2022届高三下学期三模数学试题
天津市南开区2022届高三下学期三模数学试题天津市第七中学2022-2023学年高三上学期12月月考数学试题天津市南开区翔宇学校2022-2023学年高三上学期期末数学试题天津市南开大学附属中学2023届高三下学期2月统练(一)数学试题(已下线)天津市南开中学2023届高三下学期第五次月考数学试题(已下线)专题27 数列求和-2(已下线)专题6-2 数列大题综合18种题型(讲+练)-1(已下线)模块六 专题6 全真拔高模拟2(已下线)数列 求和天津市滨海新区塘沽第一中学2023-2024学年高二上学期期末数学练习9(已下线)第7讲 数列求和9种常见题型总结 (2)专题04数列求和(裂项求和)
6 . 在公差不为零的等差数列
和等比数列
中,
为
的前
项和.已知
,且
是
与
的等比中项.
(1)求
和
的通项公式;
(2)记数列
的前
项和为
,求
;
(3)求
.
![](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/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/f1371ddea5686475e758dbb68470bba5.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)
(1)求
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/83cf38189d5cbf627d2b82ac0eb76006.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/034ba25825c13725931c483aa47c9363.png)
(2)记数列
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b52c9237cb0b4acc568d4afb12997186.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/f1ae9a3b0b7aeb1545b65d91aa371b3c.png)
(3)求
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/cb12bc48822737f4065413e6e6bba7ce.png)
您最近一年使用:0次
2023-03-24更新
|
1683次组卷
|
3卷引用:天津市部分区2023届高三下学期一模数学试题
7 . 已知
为等差数列,数列
满足
,且
,
,
.
(1)求
和
的通项公式;
(2)若
,求数列
的前
项和;
(3)设
的前
项和为
,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/75a0b31beaa21a6e8167341f497fbc16.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/297bdbc5462758a7dfc779fc1cf763dd.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/eab7d59ce066c8f0b346719003f8e28f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a8a0eecb5b800fce9ae10aed86ffee62.png)
(1)求
![](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/f49d6531aeaa2281ce0fe6803612b346.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/57ef6d44448092ebdb9e4a49d866a749.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e2d51f9147b8265c0276c1f2c2659197.png)
(3)设
![](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/625dcbe5a95ed1605ef495e73f44dbcb.png)
您最近一年使用:0次
8 . 已知等差数列
的前
项和为
,
,
,数列
满足
,
.
(1)求
的通项公式:
(2)设数列
满足
,
①求
前
项中所有奇数项和
,②若
的前n项和为
,证明:
.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/76aef4cdcb5af742ce28003b7b6c8c20.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/033fd16b5cffcaf285d28d7583e0ff3f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0f329b217e1051b23f0d61023cdc6e69.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5b72ddd7de598464a37b10f03f67b904.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e0ce1a0815e84c82544abd418572f4b6.png)
(1)求
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0f329b217e1051b23f0d61023cdc6e69.png)
(2)设数列
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c5ab0309e2cd35585ea9fb2cc3017abf.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/68ce005f02c09735be7b52ba3e517dd6.png)
①求
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c5ab0309e2cd35585ea9fb2cc3017abf.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e2d51f9147b8265c0276c1f2c2659197.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/63d564e9b1fdb2f528f2c9591946b167.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c5ab0309e2cd35585ea9fb2cc3017abf.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f1ae9a3b0b7aeb1545b65d91aa371b3c.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2caf8c4806569a493c79902a617f4c2e.png)
您最近一年使用:0次
2023-12-29更新
|
1375次组卷
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4卷引用:天津市和平区耀华中学2024届高三上学期期末数学试题
天津市和平区耀华中学2024届高三上学期期末数学试题(已下线)2024年天津高考数学真题平行卷(基础)山东省新泰市第一中学老校区(新泰中学)2024届高三上学期第三次大单元考试数学试题(已下线)考点10 数列求和 2024届高考数学考点总动员【练】
9 . 已知等差数列
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)记
,其中
,求数列
的前
项和
.
![](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/b065334d8f60c49f4bd3d9f1373fe4cd.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a8a0eecb5b800fce9ae10aed86ffee62.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/eab7d59ce066c8f0b346719003f8e28f.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)记
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/48ab19d5a8c560c50f98d3c740cdcce5.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/699dfd96d64e59252e384847629c7a75.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/57ef6d44448092ebdb9e4a49d866a749.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e2d51f9147b8265c0276c1f2c2659197.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/3b9a0d7150fb24be3e28ef7f0e18be93.png)
您最近一年使用:0次
2023-11-02更新
|
1420次组卷
|
5卷引用:天津市武清区黄花店中学2024届高三上学期第二次练习数学试题
天津市武清区黄花店中学2024届高三上学期第二次练习数学试题福建省厦门外国语学校2024届高三上学期期中考试数学试题江西省广丰贞白中学2024届高三上学期11月月考数学试题(已下线)模块四 专题6 大题分类练(数列)拔高能力练(人教A)(已下线)专题5-3数列求和及综合大题归类-1
10 . 记
是等差数列
的前
项和,数列
是等比数列,且满足
,
.
(1)求数列
和
的通项公式;
(2)设数列
满足
,
(ⅰ)求
的前
项的和
;
(ⅱ)求
.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/08eb71ecf8d733b6932f4680874dbbf3.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/76aef4cdcb5af742ce28003b7b6c8c20.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b6a24198bd04c29321ae5dc5a28fe421.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0f329b217e1051b23f0d61023cdc6e69.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/67616cc8020d5749ff70aa860933a90c.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e11d8be3e39431d9fcba33aa04877faa.png)
(1)求数列
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/76aef4cdcb5af742ce28003b7b6c8c20.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0f329b217e1051b23f0d61023cdc6e69.png)
(2)设数列
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c5ab0309e2cd35585ea9fb2cc3017abf.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/45f8c71fc5228f7679e5ef8f9aae1630.png)
(ⅰ)求
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c5ab0309e2cd35585ea9fb2cc3017abf.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2def5aa62f497709e1bd8258583d62fa.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c35926bf4b8e2c163c20942173cffcce.png)
(ⅱ)求
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/30b6ba3b9f5a95c2c8fe6d0dce686e67.png)
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