1 . 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
|
1224次组卷
|
7卷引用: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
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(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
2 . 已知数列
满足
,且
.
(1)求证:数列
是等差数列;
(2)记
,数列
的前n项和为
.
![](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/953c344b027c94825faaf238478c1477.png)
(1)求证:数列
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/099a64d86bd0b4602578d910322adc1b.png)
(2)记
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/470cd032371dd0193f340ca87d4ad2d8.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
2021-11-18更新
|
1112次组卷
|
3卷引用:辽宁省朝阳市第二高级中学2021-2022学年高二下学期4月月考数学试题
名校
解题方法
3 . 已知数列
的首项
,且
.
(1)证明:数列
为等差数列;
(2)已知
,数列
的前
项和为
,若
,求正整数
的最小值.
![](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/d11efb0e1d2f82c982352dbbc2709745.png)
(1)证明:数列
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/099a64d86bd0b4602578d910322adc1b.png)
(2)已知
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4f4a57cc10613c6b261ac3a8649cbdaf.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/612df02d43f03eb00f3ed84b3b2fcb98.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/294f5ba74cdf695fc9a8a8e52f421328.png)
您最近一年使用:0次
2021-11-08更新
|
1020次组卷
|
6卷引用:辽宁省沈阳市翔宇中学2021-2022高三上学期第二次月考数学试题
4 . 已知数列
满足
,
.
(1)求证:数列
是等差数列,并求数列
的通项公式;
(2)若 ,求数列
的前n项和
.
(在①
;②
;③
三个条件中选择一个补充在第(2)问中,并对其求解,如果多写按第一个计分)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/894aaec56149f880c7cf2bbc0f358d2b.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/af36386fefa697b5808aae8196b0b5f5.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/950c6303c2ec03e48137be8addf9245c.png)
(1)求证:数列
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/41cf1da18d91f7c98086553d157d1a87.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/894aaec56149f880c7cf2bbc0f358d2b.png)
(2)若 ,求数列
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/3f1ce1d77a0a00432fccf2a0b3b85dc8.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f1ae9a3b0b7aeb1545b65d91aa371b3c.png)
(在①
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ef4cecbdebeb5d12fbe1d54b81cc05a8.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4b20224f6ba644d885435646a9b91b45.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b0de4d39faf178f93666c1038e06fcc5.png)
您最近一年使用:0次
2021-10-21更新
|
468次组卷
|
2卷引用:辽宁省名校联盟2021-2022学年高三上学期10月联合考试数学试题
名校
解题方法
5 . 已知数列
满足
.
(1)求数列
的通项公式;
(2)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/ecb7eeced2a9317415e4da3a993e6483.png)
(1)求数列
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/83cf38189d5cbf627d2b82ac0eb76006.png)
(2)设
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f3fe29735665abc881a7723a5d322fe7.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/283b413b87140d50cb0aa49c23571c07.png)
您最近一年使用:0次
2021-05-24更新
|
1676次组卷
|
3卷引用:2021年普通高等学校招生全国统一考试(辽宁)数学试题黑卷
名校
解题方法
6 .
为数列
的前
项和,已知![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2b15dc454214bb131b44488a29ab7d38.png)
(1)设
,证明:
,并求
;
(2)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/b6a24198bd04c29321ae5dc5a28fe421.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2b15dc454214bb131b44488a29ab7d38.png)
(1)设
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5a4a67138f29758d025473086601cef0.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/21401f9ec5408d1a4cbce43b286f8a92.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/96abfe2da27a63e6affb19a0c80236d9.png)
(2)证明:
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2882782f41594f38376b8f443b453a0d.png)
您最近一年使用:0次
2021-08-09更新
|
846次组卷
|
4卷引用:辽宁省鞍山市2020-2021学年高二下学期期中数学试题
辽宁省鞍山市2020-2021学年高二下学期期中数学试题甘肃省张掖市某重点校2022-2023学年高三上学期10月月考数学(文)试题(已下线)专题14 类等差法和类等比法 微点2 类等差法和类等比法综合训练安徽省桐城中学2021-2022学年高二上学期摸底数学试卷
7 . 记
为数列
的前n项和,已知
,且数列
是等差数列.
(1)证明:
是等差数列.
(2)若
,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/8bb8793d73e2fbef04fd0578e1b2f6e1.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/832d1e3a06f59a35396aac6e12c5e2ee.png)
(1)证明:
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/83cf38189d5cbf627d2b82ac0eb76006.png)
(2)若
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b065334d8f60c49f4bd3d9f1373fe4cd.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/066148b3742a0b924277284959248b7b.png)
您最近一年使用:0次
名校
解题方法
8 . 数列
中,
且
,其中
为
的前
项和.
(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/b5f21c9c920ec8bc13650e9b2f455290.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/86746e76f2e07dbb927e282df7acda93.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)
(1)求
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/83cf38189d5cbf627d2b82ac0eb76006.png)
(2)证明:
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/77d4eab4a2c61c1c05a74c36e1a07977.png)
您最近一年使用:0次
2021-09-23更新
|
2121次组卷
|
10卷引用:辽宁省盘锦市高级中学2021-2022学年高三上学期9月月考数学试题
辽宁省盘锦市高级中学2021-2022学年高三上学期9月月考数学试题浙江省之江教育评价2021届高三下学期2月返校联考数学试题(已下线)【新东方】绍兴数学高三下【00043】(已下线)精做02 数列-备战2021年高考数学(文)大题精做(已下线)精做02 数列-备战2021年高考数学(理)大题精做(已下线)专题20 数列综合-2020年高考数学母题题源全揭秘(浙江专版)江苏省徐州市2021届高三下学期第三次调研测试数学试题(已下线)第4章 数列 单元综合检测(重点)(单元培优)-2021-2022学年高二数学课后培优练(苏教版2019选择性必修第一册)湖南省长沙市雅礼中学等十六校2022届高三下学期第一次联考数学试题(已下线)三轮冲刺卷07-【赢在高考·黄金20卷】备战2022年高考数学模拟卷(新高考专用)
9 .
为数列
的前
项和,已知
.
(1)设
,证明:
,并求
;
(2)证明:
.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/39ebbd86d7341cc5b0b6dea082a91c71.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/fa63974248eefb88215cf8a83351716d.png)
(1)设
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5a4a67138f29758d025473086601cef0.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/597dbf69b2be9c8839f56cf72b21815c.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a9408e3483a9e54c6598e4ce7fb9211f.png)
(2)证明:
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/23d4126bede671797049b8c768546c95.png)
您最近一年使用:0次
名校
解题方法
10 . 已知函数
,函数
在
上的零点按从小到大的顺序构成数列
.
(1)求数列
的通项公式;
(2)设
,且数列
的前
项和
,求证:
.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/6177522377c4f59d7e0f09f0677cb8c0.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/abbe82d62ee6a8ec41877dbba09c0c98.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/6ab5e0524def52baf53480b8726784ed.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/3f419b37a8000307c448986e294591c0.png)
(1)求数列
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/83cf38189d5cbf627d2b82ac0eb76006.png)
(2)设
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0cd53ecb4e27dca23dd0ac7a648e0315.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)
您最近一年使用:0次