1 . 已知数列
满足
,![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ed8835310e62c3b17c579dae642cb166.png)
(1)求证:数列
为等差数列;
(2)求数列
的通项公式与最大值.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/63d471926f7b27322d90c82b9ce21d3d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b065334d8f60c49f4bd3d9f1373fe4cd.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ed8835310e62c3b17c579dae642cb166.png)
(1)求证:数列
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/35440ebc1b87cbf08fe96c083c5bcc88.png)
(2)求数列
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/63d471926f7b27322d90c82b9ce21d3d.png)
您最近一年使用:0次
2024-01-02更新
|
1526次组卷
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5卷引用:黑龙江省哈尔滨市第九中学2023-2024学年高二下学期开学考试数学试卷
名校
解题方法
2 . 在数列{an}中,a1=1,3anan-1+an-an-1=0(n
2,n∈N*).
(1)证明:数列
是等差数列;
(2)求数列{an}的通项公式;
(3)若λan+![](https://staticzujuan.xkw.com/quesimg/Upload/formula/1b7e761be88728b3db50c2abd4377c12.png)
λ对任意的n
2恒成立,求实数λ的取值范围.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e119c508fd265e3e3d78749e54fe4f43.png)
(1)证明:数列
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/41cf1da18d91f7c98086553d157d1a87.png)
(2)求数列{an}的通项公式;
(3)若λan+
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/1b7e761be88728b3db50c2abd4377c12.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e119c508fd265e3e3d78749e54fe4f43.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e119c508fd265e3e3d78749e54fe4f43.png)
您最近一年使用:0次
2021-11-21更新
|
1455次组卷
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8卷引用:江苏省苏州市高新区第一中学2021-2022学年高二上学期期初考试数学试题
江苏省苏州市高新区第一中学2021-2022学年高二上学期期初考试数学试题人教A版(2019) 选择性必修第二册 过关斩将 第四章 数列 4.2 等差数列 4.2.1 等差数列的概念人教B版(2019) 选修第三册 突围者 第五章 第二节 课时1 等差数列苏教版(2019) 选修第一册 一蹴而就 第4章 4.2.2 等差数列的通项公式(已下线)4.2.1-4.2.2 等差数列的概念及通项公式(课堂培优)-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)(已下线)第三课时 课后 4.2.1.1等差数列的概念与通项公式2023版 湘教版(2019) 选修第一册 过关斩将 第1章 1.2.1等差数列及其通项公式+1.2.2等差数列与一次函数北京名校2023届高三一轮总复习 第5章 数列 5.2 等差数列
名校
解题方法
3 . 设函数
定义域为
,当
时,
,且对于任意的
,有
成立.数列
满足
,且
.
(1)求
的值;
(2)求数列
的通项公式;
(3)是否存在正数
,使
对一切
均成立,若存在,求出
的最大值,并证明,否则说明理由.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/51c530f4b7491b95acb8ce3eef9aa09d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a43b2faa4f81f32d94612dce724e772b.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/9e541ea2f855f981c96207070683d388.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5be1d8c6384d7fabddb693b2b7fcdf4a.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f5ab4b75fa22deba7fcbcdcb31dd45b2.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c0b8e9b3f07d91da4d256d18df240fe5.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/83cf38189d5cbf627d2b82ac0eb76006.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/dbee4ceccdf3396733d915ea9ab8dcbc.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e1816c883d44c326f26ffd7c8836659b.png)
(1)求
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f54b6a060d6c51a328341df76013bd89.png)
(2)求数列
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/83cf38189d5cbf627d2b82ac0eb76006.png)
(3)是否存在正数
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f0a532e15e232cb4b99a8d4d07c89575.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a0dba72e55b30a4f400cbdae7b707e29.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/48f093c61867ee4ce75f951d46b9b123.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f0a532e15e232cb4b99a8d4d07c89575.png)
您最近一年使用:0次
2021-03-23更新
|
205次组卷
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2卷引用:上海交通大学附属中学2020-2021学年高一下学期开学数学试题
名校
4 . 各项均为正数的数列
的前n项和为
,且满足
.各项均为正数的等比数列
满足
.
(1)求证
为等差数列并求数列
、
的通项公式;
(2)若
,数列
的前n项和
.
①求
;
②若对任意
,均有
恒成立,求实数m的取值范围.
![](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/8ffa75b32ffcada8c93c9172084886ba.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/034ba25825c13725931c483aa47c9363.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/16e3a41960ad8e095e15236756f68ceb.png)
(1)求证
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/83cf38189d5cbf627d2b82ac0eb76006.png)
![](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/86b963592890b4edb989e4729ec062b4.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/57ef6d44448092ebdb9e4a49d866a749.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f1ae9a3b0b7aeb1545b65d91aa371b3c.png)
①求
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f1ae9a3b0b7aeb1545b65d91aa371b3c.png)
②若对任意
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/94c7aab4df25884973273efae244f2df.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/fd76af3e50a34c849cc3d6c4011aff95.png)
您最近一年使用:0次
2019-11-30更新
|
1885次组卷
|
7卷引用:天津市武清区杨村一中2019-2020学年高三(下)开学考数学试题
名校
5 . 已知正项数列
满足
.
(1)求证:数列
是等差数列;
(2)若数列
满足
,且数列
的最大项为
,最小项为
,求
的值.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/63d471926f7b27322d90c82b9ce21d3d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a250e983bb77804a46ddd7743313481c.png)
(1)求证:数列
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/63d471926f7b27322d90c82b9ce21d3d.png)
(2)若数列
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5fce83115a50f99e08e9a2db7267aeed.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5fc6d302e5b8ae0c8e08e70aa959a115.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5fce83115a50f99e08e9a2db7267aeed.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/3d7dd877103f225767609289fc7a25f0.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/87cf58a39b00433d2ffbf34e86ca2f36.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/aaacfaef44a654c0a1c283ef03fc0550.png)
您最近一年使用:0次
2018-10-05更新
|
677次组卷
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2卷引用:【全国百强校】成都七中2018-2019学年级高二上期理科数学