名校
解题方法
1 . 已知数列
的前n项和
满足
其中
.
(1)证明:数列
为等比数列;
(2)设
求数列
的前n项和
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/63d471926f7b27322d90c82b9ce21d3d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/08eb71ecf8d733b6932f4680874dbbf3.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2d5d527b4e98a509b1d19d462848dd56.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/cea4ac187cbb465180e89f38250b3970.png)
(1)证明:数列
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/63d471926f7b27322d90c82b9ce21d3d.png)
(2)设
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0b07448295cdb3d2889e835a41c0c467.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5fce83115a50f99e08e9a2db7267aeed.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/68eee81e090b96819b7df54fc1bcc3a6.png)
您最近一年使用:0次
2021-01-27更新
|
320次组卷
|
3卷引用:江西省吉安市第三中学2023届高三第一次模拟文科数学试题
解题方法
2 . 已知首项为
的数列
满足
,数列
满足
.
(1)求证:数列
是等比数列,并求数列
的通项公式;
(2)若
,求数列
的前
项和
.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/bdaa19de263700a15fcf213d64a8cd57.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/83cf38189d5cbf627d2b82ac0eb76006.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/565929b3848230efe70d92b6aa696994.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/034ba25825c13725931c483aa47c9363.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a5b67f58953dee110d85539243a422a6.png)
(1)求证:数列
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/034ba25825c13725931c483aa47c9363.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/034ba25825c13725931c483aa47c9363.png)
(2)若
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d665e792ed5a5358da9cd8516560851f.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/08eb71ecf8d733b6932f4680874dbbf3.png)
您最近一年使用:0次
2020-12-26更新
|
127次组卷
|
2卷引用:江西省重点中学2021届高三上学期总复习阶段性检测考试数学(理)试题
解题方法
3 . 记首项为1的数列
的前
项和为
,且
,数列
满足
.
(1)求证:数列
是等比数列;
(2)求满足
成立的最小正整数
的值.
![](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/46c81b6920ba0cb92921387479961e6c.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/034ba25825c13725931c483aa47c9363.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5c3ced9b7448b4c1ffbb801e184b2a49.png)
(1)求证:数列
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/846fa57d92d6ad44d6a0cafad1e71ed4.png)
(2)求满足
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ee3ceef3b8d9aed151e57e509580a268.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f0a532e15e232cb4b99a8d4d07c89575.png)
您最近一年使用:0次
名校
4 . 已知数列
的前
项和为
,且
.
(1)求证:数列
是等比数列;
(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)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/909a83550217ff00b523835fda54062e.png)
(1)求证:数列
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ec33645f4862e7e24995ea3ec48b815d.png)
(2)求
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2c1a7a9cf9f9de47577f500ffe562142.png)
您最近一年使用:0次
2020-11-23更新
|
519次组卷
|
6卷引用:【南昌新东方】江西师大附中2020年-2021学年高三上学期11月期中数学(理)理试题26
(已下线)【南昌新东方】江西师大附中2020年-2021学年高三上学期11月期中数学(理)理试题26“皖赣联考”2021届高三第一学期第三次考试 数学(理)试题“皖赣联考”2021届高三第一学期第三次考试 数学(文)试题安徽省皖江名校联盟2020-2021学年高三上学期11月第三次联考数学(理)试题安徽省皖江名校联盟2020-2021学年高三上学期11月第三次联考数学(文)试题湖北省孝感市汉川二中2020-2021学年高二上学期12月月考数学试题
名校
解题方法
5 . 已知数列
满足
,
.
(1)求数列
的通项公式;
(2)若数列
的前n项和
,则n的最小值是多少?
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/83cf38189d5cbf627d2b82ac0eb76006.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2693734765399876e9e93cdb110231c4.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/3998df04d0a8ded946c3f39d545fdc7e.png)
(1)求数列
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/83cf38189d5cbf627d2b82ac0eb76006.png)
(2)若数列
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/83cf38189d5cbf627d2b82ac0eb76006.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2e6366f03469c316fab71a207400b6ce.png)
您最近一年使用:0次
2020-08-31更新
|
206次组卷
|
3卷引用:江西省上饶市广信区综合高级中学2023-2024学年高三上学期9月月考数学试题
名校
解题方法
6 . 已知
是数列
的前n项和,且![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d999d78d7e288953ec061670a5174615.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/28d82e4c2294efbd33e1b268e9a0cec5.png)
(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/08eb71ecf8d733b6932f4680874dbbf3.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/83cf38189d5cbf627d2b82ac0eb76006.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d999d78d7e288953ec061670a5174615.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/28d82e4c2294efbd33e1b268e9a0cec5.png)
(1)求数列
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/83cf38189d5cbf627d2b82ac0eb76006.png)
(2)设
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/83d90764055233426b2f630f7ab3c152.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/e672c3d231081d12e44a4211e5ac60bf.png)
您最近一年使用:0次
2020-07-26更新
|
875次组卷
|
3卷引用:江西省南昌市第二中学2021届高三上学期第四次考试数学(文)试题
名校
解题方法
7 . 已知数列
,
满足
,对任意
均有
,
.
(1)证明:数列
和数列
均为等比数列;
(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/034ba25825c13725931c483aa47c9363.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ebaf2a2590bb84d646957f913d78f6dc.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/1933b7c3ace69622339353431c519b13.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d806abf9558e6be9ce5ba79a79d113ab.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e557df2f9aeecbc164482608a4c7c88b.png)
(1)证明:数列
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5344eadd4711db34e3f935aedd5fb270.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b52c9237cb0b4acc568d4afb12997186.png)
(2)设
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d192ce23fc9dbaa6c44b1e3404dad9aa.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
2020-07-21更新
|
507次组卷
|
2卷引用:江西省师大附中2020届高三三模考试理科数学试题
8 . 已知非零数列
满足
,
;
(1)证明:数列
为等比数列,并求
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/b065334d8f60c49f4bd3d9f1373fe4cd.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c2ed033d74c85a45e7e5547427038eef.png)
(1)证明:数列
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/345edc602f5c52122b91e6864902fb8a.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/83cf38189d5cbf627d2b82ac0eb76006.png)
(2)求数列
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/8b191044f5c024f377d999910b78b422.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
名校
解题方法
9 . 已知
是数列
的前n项和,
,
.
(1)求数列
的通项公式;
(2)若
,
,求数列
的前n项和
.
![](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/b9f1c9bdfb252a71b1fc88d7f8082240.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b065334d8f60c49f4bd3d9f1373fe4cd.png)
(1)求数列
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/83cf38189d5cbf627d2b82ac0eb76006.png)
(2)若
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/3b2b820aeae8eb64d8816ef2c4912b63.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/175005738672c8c1f431aac6333ab94f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/57ef6d44448092ebdb9e4a49d866a749.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f1ae9a3b0b7aeb1545b65d91aa371b3c.png)
您最近一年使用:0次
2020-06-16更新
|
1063次组卷
|
4卷引用:江西省永丰中学2020届高三7月3号考前保温卷数学(理科)试题
名校
解题方法
10 . 已知数列
的前
项和为
,且
.
(1)证明:数列
为等比数列;
(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/b6a24198bd04c29321ae5dc5a28fe421.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/08eb71ecf8d733b6932f4680874dbbf3.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a21c9422e34e3ab852ddbe05508d1960.png)
(1)证明:数列
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/1c7d94406136605c5bc9cd9295d6c9fa.png)
(2)若
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/3a19b768877f8c44b71c4a0d9f5d3b98.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)
您最近一年使用:0次
2020-09-20更新
|
1081次组卷
|
8卷引用:江西省南昌十中2020届高三高考适应性考试文科数学试题
江西省南昌十中2020届高三高考适应性考试文科数学试题【市级联考】湖南省湘潭市2019届高三上学期第一次模拟检测数学(理)试题天津市河北区2020届高考二模数学试题(已下线)2021届高三高考数学适应性测试八省联考考后仿真系列卷四安徽省阜阳市太和中学2019-2020学年高二下学期期末数学(理)试题(已下线)拓展二 数列求和的方法(精练)-2020-2021学年一隅三反系列之高二数学新教材选择性必修第二册(人教A版)(已下线)4.3.1 等比数列的概念1课时黑龙江省大庆市实验中学2021-2022学年高二实验一部下学期4月阶段性质量检测(月考)数学试题