1 . 设正项数列
的前n项和为
,
,且满足___________.给出下列三个条件:
①
,
;②
;③
.
请从其中任选一个将题目补充完整,并求解以下问题:
(1)求数列
的通项公式;
(2)设
,
是数列
的前n项和,求证:
.
![](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/b065334d8f60c49f4bd3d9f1373fe4cd.png)
①
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/22c5c4ac959eb2c4b74afabc9cdd3a6b.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2ceb2af10086d16399167b8f0181e17a.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/3e02007a9db1cccfcb75ed671eccce12.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/3a7b4dbd0d53e3b8d607290b06b1d0b3.png)
请从其中任选一个将题目补充完整,并求解以下问题:
(1)求数列
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/83cf38189d5cbf627d2b82ac0eb76006.png)
(2)设
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/3bf2b1d9e391aad68d1699a52dd59cce.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f1ae9a3b0b7aeb1545b65d91aa371b3c.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/034ba25825c13725931c483aa47c9363.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f1cb91e89800a81f4d62ed75c3ace24a.png)
您最近一年使用:0次
2 . 已知公差不为0的等差数列
满足
,且
成等比数列.
(1)求数列
的通项公式;
(2)设
,
为
的前
项和,求证:
.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b4be2164a2c67d6163faee87a10942bb.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b065334d8f60c49f4bd3d9f1373fe4cd.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2a18556fda4a825861f1170cdeb059ff.png)
(1)求数列
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b4be2164a2c67d6163faee87a10942bb.png)
(2)设
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f81c50676cbc29cfffdb62e15414c81c.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f1ae9a3b0b7aeb1545b65d91aa371b3c.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/6bad40ea8ed5619b07b43d4a037697dd.png)
您最近一年使用:0次
2022-07-10更新
|
635次组卷
|
2卷引用:北京市清华大学附属中学2021-2022学年高一下学期期末考试数学试题
名校
解题方法
3 . 已知函数
.
(1)求证:![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f3a948a5eaf678b7107b938be3a56d8e.png)
(2)求证:
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/aa7f9b35017daa8b524c5717a355834a.png)
(1)求证:
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f3a948a5eaf678b7107b938be3a56d8e.png)
(2)求证:
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0cdea634b07c580a1497e518c3c7ef84.png)
您最近一年使用:0次
名校
解题方法
4 . 数列
的前
项和记为
,已知
,
.
(1)求
的通项公式;
(2)设
,
为数列
的前
项和,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/e9645bd4d2002993b90ec6d48f9c04f7.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b61cc942eaa2c2d9f47608ddfcdd716c.png)
(1)求
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/83cf38189d5cbf627d2b82ac0eb76006.png)
(2)设
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/077142ef4241cc8b52889225b9de6065.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f1ae9a3b0b7aeb1545b65d91aa371b3c.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)
您最近一年使用:0次
2022-10-11更新
|
955次组卷
|
4卷引用:四川省内江市第六中学2021-2022学年高一下学期第二次月考理科数学试题
四川省内江市第六中学2021-2022学年高一下学期第二次月考理科数学试题四川省内江市第六中学2021-2022学年高一下学期第二次月考(创新班)理科数学试题(已下线)第6讲 数列的通项公式的11种题型总结(3)(已下线)专题4-2 数列前n项和的求法-【高分突破系列】2022-2023学年高二数学同步知识梳理+常考题型(人教A版2019选择性必修第二册)
5 . 设各项均为正数的等比数列
中,
,
,数列
的前n项和
.
(1)求数列
、
的通项公式;
(2)若数列
是递增数列,数列
满足
,
,求数列
的通项公式;
(3)设数列
前n项和
,求证
.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/83cf38189d5cbf627d2b82ac0eb76006.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c4fb4b599e37a825bce2a0c29f09af8d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/8397518da7e212977caa437f3469617e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/034ba25825c13725931c483aa47c9363.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a71d9f48a0d9c122e1b8076270ff5c52.png)
(1)求数列
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/83cf38189d5cbf627d2b82ac0eb76006.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/034ba25825c13725931c483aa47c9363.png)
(2)若数列
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/83cf38189d5cbf627d2b82ac0eb76006.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/57ef6d44448092ebdb9e4a49d866a749.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/50e1ee88beaddafb0d0a185c3a8e0dc5.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/03871773f6eb680e06bbdf17aa8526ba.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/57ef6d44448092ebdb9e4a49d866a749.png)
(3)设数列
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/cee50c0db4c90c39bf72c9aeccb977bd.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f1ae9a3b0b7aeb1545b65d91aa371b3c.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c02e80983b88cdf6b540502816c87d13.png)
您最近一年使用:0次
名校
解题方法
6 . 已知数列
的前
项和为
,且
.
(1)求
的通项公式;
(2)若
,求证: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/8ce817f902302ebdd5a599e43df77614.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/b6a24198bd04c29321ae5dc5a28fe421.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e672c3d231081d12e44a4211e5ac60bf.png)
您最近一年使用:0次
2022-07-02更新
|
569次组卷
|
6卷引用:四川省巴中市2021-2022学年高一下学期期末数学试(文)题
7 . 设数列
的前
项和为
,正项数列
的前
项和为
,
且![](https://staticzujuan.xkw.com/quesimg/Upload/formula/3d2a742e1f462ab650b802054e662a50.png)
(1)求
和
;
(2)记
,
N*,求证:
.
![](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/b6a24198bd04c29321ae5dc5a28fe421.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f1ae9a3b0b7aeb1545b65d91aa371b3c.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c8370a173854471a3eb27637993a3d5d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/3d2a742e1f462ab650b802054e662a50.png)
(1)求
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/96abfe2da27a63e6affb19a0c80236d9.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/686ece75006ad358f23314dc8a246e11.png)
(2)记
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/332cf4ff6c20e5f4da70c058743d1f0b.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f5b0aafc603ba02b6702e785b00a5013.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/8a57f583745202173ebbfd1b8f3181d3.png)
您最近一年使用:0次
11-12高三上·广东佛山·阶段练习
8 . 在等差数列
中,
,其前
项和为
,等比数列
的各项均为正数,
,公比为q,且
.
(1)求
与
;
(2)证明:
.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/83cf38189d5cbf627d2b82ac0eb76006.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b13a6e1d671215fc96e4bee3541d1096.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/59dd6c97d2ee3e74ba5730f1cbcc1d43.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/3c25b07f361e643922429bb4fe7b8c1f.png)
(1)求
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/96abfe2da27a63e6affb19a0c80236d9.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/686ece75006ad358f23314dc8a246e11.png)
(2)证明:
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/44a7ea33698be8ab4307379e647378c2.png)
您最近一年使用:0次
2022-06-17更新
|
475次组卷
|
16卷引用:四川省眉山市2016-2017学年高一下学期期末考试数学试题
四川省眉山市2016-2017学年高一下学期期末考试数学试题【全国百强校】北京东城区北京二中2016-2017学年高一下学期期中考试数学试题四川省绵阳市三台中学校2021-2022学年高一下学期第四学月月考测试数学试题(已下线)2012届广东省三水实验中学高三上学期第十次月考理科数学(已下线)2012届北京市高考模拟系列试卷(二)理科数学试卷2016届宁夏六盘山高中高三上学期第二次月考理科数学试卷2015-2016学年重庆八中高二下第三次周考理科数学试卷2017届内蒙古杭锦后旗奋斗中学高三上入学摸底数学理试卷2017届山东寿光现代中学高三实验班10月月考数学(理)试卷【全国百强校】甘肃省兰州第一中学2019届高三9月月考数学(文)试题江西省南康中学2018-2019学年高二下学期期中考试数学(理)试题智能测评与辅导[理]-算法 推理与证明陕西省西安市电子科技大学附属中学2019-2020学年高二上学期期中数学(理)试题海南省海口市灵山中学2020届上学期高三第三次月考试题广东省揭阳市普宁市华侨中学2021-2022学年高二下学期第三次月考数学试题(已下线)专题训练:数列综合运用大题-【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)
9 . 已知数列
的前
项和
满足
,数列
是公差为
的等差数列,且
.
(1)求数列
的通项公式;
(2)设
,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/b6a24198bd04c29321ae5dc5a28fe421.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/08eb71ecf8d733b6932f4680874dbbf3.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d3399581f68e9f834cc2c7a85bb5186e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2733fec5370b4f1671834c0d0e7d84e5.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/acbc6a613224461ade69362d46550474.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/59dd6c97d2ee3e74ba5730f1cbcc1d43.png)
(1)求数列
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/62e567d7e9761951a266953c8d5042ac.png)
(2)设
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/34f7b7ef8aeed0e62a136164c58fae30.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/9c3fec47d2dd2b8099d86c87b6e57de8.png)
您最近一年使用:0次
解题方法
10 . 已知数列
前n项和
,满足
.
(1)证明
是等比数列;
(2)数列
,
,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/fca19fcc105bf2feaa790515f53e0381.png)
(1)证明
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/1c7d94406136605c5bc9cd9295d6c9fa.png)
(2)数列
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ea0e718251945a01e7d609f79484ac51.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0704f453b2de48d36911f7db496bbf82.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
2022-07-21更新
|
547次组卷
|
4卷引用:四川省凉山彝族自治州2021-2022学年高一下学期期末数学(理)试题
四川省凉山彝族自治州2021-2022学年高一下学期期末数学(理)试题四川省凉山彝族自治州2021-2022学年高一下学期期末数学(文)试题1.3.2 等比数列与指数函数(同步练习基础版)(已下线)河南省实验中学2023-2024学年高三上学期第一次月考数学试题变式题15-18