名校
解题方法
1 . 已知数列
满足
,
,
.
(1)求数列
,
的通项公式;
(2)设
,数列
的前
项和为
,求证:
.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/83cf38189d5cbf627d2b82ac0eb76006.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/884ad5c96b0159e10777f748d47bf39d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7a95a6d18b8d9f842812929b47b5d2d5.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/209591cfb9f8271f5ad48d89f214f22e.png)
(1)求数列
![](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/6faa1477d9fa3471ad7da1bc374a3a91.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/e672c3d231081d12e44a4211e5ac60bf.png)
您最近一年使用:0次
2021-12-02更新
|
1290次组卷
|
2卷引用:河南省九师联考2021-2022学年高二上学期期中考试理科数学试题
2 . 已知数列{
}的前
项和为
,
,
(1)求数列{
}的通项公式;
(2)设
,
为数列
的前
项和.证明:
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/96abfe2da27a63e6affb19a0c80236d9.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/9610a946846067376e97a31367da9949.png)
(1)求数列{
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/96abfe2da27a63e6affb19a0c80236d9.png)
(2)设
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d8497f33b535453cf984bc3526f0a204.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f1ae9a3b0b7aeb1545b65d91aa371b3c.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/6d1c8633da6d4e6996a6579996f8b70a.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b6a24198bd04c29321ae5dc5a28fe421.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/66861fad4a49ff6eaedfe4828dbe455e.png)
您最近一年使用:0次
3 . 已知数列
满足
,且
.
(1)求证:数列
为等差数列,并求出数列
的通项公式;
(2)若
,求数列
的前
项和
.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/83cf38189d5cbf627d2b82ac0eb76006.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/8efc00556a20d6d5d63f15318eb8b128.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b065334d8f60c49f4bd3d9f1373fe4cd.png)
(1)求证:数列
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/41cf1da18d91f7c98086553d157d1a87.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/83cf38189d5cbf627d2b82ac0eb76006.png)
(2)若
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ef4cecbdebeb5d12fbe1d54b81cc05a8.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)
您最近一年使用:0次
2021-11-24更新
|
1171次组卷
|
6卷引用:河南省九师联考2021-2022学年高二上学期期中考试文科数学试题
解题方法
4 . 已知数列
满足
,
,
(
,
).记
.
(1)证明: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/b065334d8f60c49f4bd3d9f1373fe4cd.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ed425fe0d43cddd48ddcdd43a0a95889.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/eeef981ab904eef0623cf7406f8f022a.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/6bc5735838e43b7a229e8f45c9bfffb3.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/65a40142c84be68ee2918c3a8303388c.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e0657d4926e03c0f817cc4d12ef27f05.png)
(1)证明:数列
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/034ba25825c13725931c483aa47c9363.png)
(2)求数列
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/9b9cbdf425942add69d8dad05465803c.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/08eb71ecf8d733b6932f4680874dbbf3.png)
您最近一年使用:0次
2021-12-27更新
|
636次组卷
|
3卷引用:河南省南阳地区2021-2022学年高二上学期12月阶段性检测考试理科数学试题
5 . 已知正项数列
满足
,且
.
(1)求数列
的通项公式;
(2)记
,记数列
的前n项和为
,证明:
.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/83cf38189d5cbf627d2b82ac0eb76006.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b065334d8f60c49f4bd3d9f1373fe4cd.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7a2fb07b46b476e4f705f40c3b81ce59.png)
(1)求数列
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/83cf38189d5cbf627d2b82ac0eb76006.png)
(2)记
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e4b8fc7fb11cc836f24fccaf4555074e.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/fc1f5d407c0e99344ed5f0f5926c5d22.png)
您最近一年使用:0次
2022-05-27更新
|
1225次组卷
|
7卷引用:河南省平顶山市第一中学2022-2023学年高二下学期期中考试数学试题
河南省平顶山市第一中学2022-2023学年高二下学期期中考试数学试题河南省焦作市第十一中学2023-2024学年高二上学期1月月考数学试题辽宁省辽西联合校2021-2022学年高二下学期期中考试数学试题(已下线)第6讲 数列的通项公式的11种题型总结(2)江苏省盐城市三校(盐城一中、亭湖高中、大丰中学)2022-2023学年高二下学期期中联考数学试题(已下线)微考点4-2 新高考新试卷结构数列的通项公式的9种题型总结陕西省西安市西光中学2023-2024学年高二上学期期末考试数学试题
解题方法
6 . 已知数列
的前
项和为
.若
,且![](https://staticzujuan.xkw.com/quesimg/Upload/formula/856ec7a9b595f33167785bf4d93f44bc.png)
(1)求
;
(2)设
,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/b6a24198bd04c29321ae5dc5a28fe421.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/08eb71ecf8d733b6932f4680874dbbf3.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b065334d8f60c49f4bd3d9f1373fe4cd.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/856ec7a9b595f33167785bf4d93f44bc.png)
(1)求
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/08eb71ecf8d733b6932f4680874dbbf3.png)
(2)设
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4acbd0344d71e12fa20bcb0383c4ca27.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5fce83115a50f99e08e9a2db7267aeed.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/6828a1cf75f19bb74a0e0490bd65c168.png)
您最近一年使用:0次
7 . 在数列
中,
,
.
(1)求
的通项公式.
(2)若
,记数列
的前n项和为
,证明:
.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/83cf38189d5cbf627d2b82ac0eb76006.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d1bae03ee4ac75dacfb026290e4207dd.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c352e5d08a831badf7c238bab25de0e4.png)
(1)求
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/83cf38189d5cbf627d2b82ac0eb76006.png)
(2)若
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7914120d4d89e30e29dc2547d3fce43b.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/c215db1d8f69757118ad405b78035628.png)
您最近一年使用:0次
2022-04-22更新
|
546次组卷
|
3卷引用:河南省洛阳市创新发展联盟2021-2022学年高二下学期联考(三)数学(文科)试卷
8 . 在等比数列
中,
,且
,
,
成等差数列.
(1)求
的通项公式;
(2)若
,证明:数列
的前n项和
.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/83cf38189d5cbf627d2b82ac0eb76006.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/1badafc6962598d9d82be9200414a4e3.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/81a1e8b72e234507e852a39cb54b783b.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/636d965536496dd6c8cfd617eb2646aa.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5f5088b89ae5035406a797e492250fbd.png)
(1)求
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/83cf38189d5cbf627d2b82ac0eb76006.png)
(2)若
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/fbf4c57b27660ea222c47274c49bb119.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/034ba25825c13725931c483aa47c9363.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/08299124b1d23c57a0fb290e0564b34b.png)
您最近一年使用:0次
2022-05-08更新
|
1109次组卷
|
5卷引用:河南省重点高中“顶尖计划“2022届高中毕业班第四次考试理科数学试题
9 . 已知
为等差数列
的前
项和,从下面①②③中任意选择两个作为条件,证明另外个成立.
①
;②
;③数列
的前
项和为
.
注:若选择不同的组合分别解答,则按第一个解答计分.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/08eb71ecf8d733b6932f4680874dbbf3.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b4be2164a2c67d6163faee87a10942bb.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b6a24198bd04c29321ae5dc5a28fe421.png)
①
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/37933cfc60b4bd29f1684687ddd2cbd4.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2bfcfff34bbb3ecc842ec4a0e899465b.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/8fbe113b7c2cc1b464e86bdfa3a6fe2c.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b6a24198bd04c29321ae5dc5a28fe421.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5ecd78faa31cdef74ac830f30708fb50.png)
注:若选择不同的组合分别解答,则按第一个解答计分.
您最近一年使用:0次
2021-12-11更新
|
373次组卷
|
4卷引用:河南省2021-2022学年高三上学期12月份联合考试数学(文科)试题
解题方法
10 . 已知数列
的前
项和为
,且
.
(1)求证:数列
是等比数列;
(2)求数列
的前
项和
.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f67fd0eb54561cd1df683a08cf049bfc.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/d5ae73004a33305fd866f75fb3e80c7a.png)
(1)求证:数列
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f67fd0eb54561cd1df683a08cf049bfc.png)
(2)求数列
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/fdaa4dce26b0c6dc6939440c56f7de52.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
2021-09-09更新
|
720次组卷
|
4卷引用:河南省部分名校2021-2022学年高三上学期8月份摸底联考数学(文)试题
河南省部分名校2021-2022学年高三上学期8月份摸底联考数学(文)试题河南省部分名校2021-2022学年高三上学期8月份摸底联考数学(理)试题(已下线)考点13 数列概念及通项公式(核心考点讲与练)-2023年高考数学一轮复习核心考点讲与练(新高考专用)(已下线)第09讲 数列求通项、求和