解题方法
1 . 已知数列
的通项公式为
,
(1)依次写出数列
的前
项;
(2)研究数列
的单调性,并求数列
的最大项和最小项.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/83cf38189d5cbf627d2b82ac0eb76006.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/89e22b5055206fab6a0c7a4380a459e0.png)
(1)依次写出数列
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/83cf38189d5cbf627d2b82ac0eb76006.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d91e07104b699c4012be2d26160976a2.png)
(2)研究数列
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/83cf38189d5cbf627d2b82ac0eb76006.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/83cf38189d5cbf627d2b82ac0eb76006.png)
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2 . 已知数列
的通项公式为
,若
为该数列的最小项,则![](https://staticzujuan.xkw.com/quesimg/Upload/formula/dd707b69a11f8de5566f23c1a2a9ff5a.png)
______ .
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/83cf38189d5cbf627d2b82ac0eb76006.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/78c47f2924e039131f103ee4189b5afe.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5f255d0395fba51ca2d44293cca42e0a.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/dd707b69a11f8de5566f23c1a2a9ff5a.png)
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3 . 已知数列
的通项公式为
,对于任意
,
恒成立,则实数
的取值范围是______ .
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/83cf38189d5cbf627d2b82ac0eb76006.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5a401be041cecfe79da9b65bcfedffad.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/21bfc624d79c645c019a82e51db7d17f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/cc89fdc74499e96541f4ebbf90a0cc87.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0a6936d370d6a238a608ca56f87198de.png)
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4 . 下列说法:①数列
,
,
,
与
,
,
,
是相同数列;②数列
,
,
,
可表示为
;③数列
,
,
,
,…的一个通项公式为
;④数列
,
,
,
,…是常数列;⑤数列
是严格递增数列,其中正确的是______ .(填编号)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/bdaa19de263700a15fcf213d64a8cd57.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c95b6be4554f03bf496092f1acdfbb89.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/acbc6a613224461ade69362d46550474.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/274a9dc37509f01c2606fb3086a46f4f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/274a9dc37509f01c2606fb3086a46f4f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/acbc6a613224461ade69362d46550474.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c95b6be4554f03bf496092f1acdfbb89.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/bdaa19de263700a15fcf213d64a8cd57.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/bdaa19de263700a15fcf213d64a8cd57.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5ca7d1107389675d32b56ec097464c14.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d91e07104b699c4012be2d26160976a2.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/8b06e95b57b7a81cd81d05557a11fa92.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b551563f2cfcaca65821ada0dd834557.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c95b6be4554f03bf496092f1acdfbb89.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/bdaa19de263700a15fcf213d64a8cd57.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/61128ab996360a038e6e64d82fcba004.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5ca7d1107389675d32b56ec097464c14.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b80c1ed7b10ac7ca1cd81cdd39a8fcc0.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c95b6be4554f03bf496092f1acdfbb89.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/bdaa19de263700a15fcf213d64a8cd57.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c95b6be4554f03bf496092f1acdfbb89.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/bdaa19de263700a15fcf213d64a8cd57.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/3e439697572e2dbd6826f7743b969813.png)
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5 . 若数列
满足
,
(
),则数列
是_________ 数列(填“严格增”或“严格减”).
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/83cf38189d5cbf627d2b82ac0eb76006.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/179513ce80436471efbe1d9b31735f7d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7c0e17212b46e1ad66f5e860c20be13e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/dd4613271f782a90ab580131d09d03d1.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/83cf38189d5cbf627d2b82ac0eb76006.png)
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2022-04-20更新
|
109次组卷
|
2卷引用:沪教版(2020) 选修第一册 领航者 第4章 4.3 第2课时 利用递推公式表示数列
6 . 已知数列
的通项公式为
,若数列
是严格减数列,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/6c779759bc679553dc0001e5a1cc310c.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/83cf38189d5cbf627d2b82ac0eb76006.png)
您最近一年使用:0次
2022-04-20更新
|
138次组卷
|
2卷引用:沪教版(2020) 选修第一册 领航者 第4章 4.3 第1课时 数列的概念与性质
7 . 若
,下列说法中正确的是_______ (填序号).
①数列
是严格增数列;②数列
是严格增数列;
③数列
是严格增数列;④数列
是严格增数列.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/3038fa2f9c5e5d790948acef78cf060e.png)
①数列
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/83cf38189d5cbf627d2b82ac0eb76006.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0496f142d8ae5acb06e83526eaa3ef87.png)
③数列
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2bf3da897eb73b729f66bb0d700775c5.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/362832fa3d3c13c1eafd565349d66dce.png)
您最近一年使用:0次
2022-04-20更新
|
107次组卷
|
2卷引用:沪教版(2020) 选修第一册 领航者 第4章 4.3 第1课时 数列的概念与性质
8 . 若数列
的通项公式为
,则数列
的最小项的值是_______ .
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/83cf38189d5cbf627d2b82ac0eb76006.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/1d428f5d529c86e28e21e714ed8b2321.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/83cf38189d5cbf627d2b82ac0eb76006.png)
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解题方法
9 . 已知数列
是递增的等比数列,前3项和为13,且
,
,
成等差数列.
(1)求数列
的通项公式;
(2)数列
的首项
,其前n项和为
,且______,若数列
满足
,
的前n项和为
,求
的最小值.
在如下两个条件中任意选择一个,填入上面横线处,并根据题意解决问题.①
;②
.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/83cf38189d5cbf627d2b82ac0eb76006.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7131900393b9906bd6dcfe26ade2059f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/911278aa8595846abac1972e1de59995.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/1cac0de42a5f24538a18373c22c3262e.png)
(1)求数列
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/83cf38189d5cbf627d2b82ac0eb76006.png)
(2)数列
![](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/08eb71ecf8d733b6932f4680874dbbf3.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/57ef6d44448092ebdb9e4a49d866a749.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ac07953530e3c248b3438fb200fb1661.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/57ef6d44448092ebdb9e4a49d866a749.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f1ae9a3b0b7aeb1545b65d91aa371b3c.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f1ae9a3b0b7aeb1545b65d91aa371b3c.png)
在如下两个条件中任意选择一个,填入上面横线处,并根据题意解决问题.①
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d3d89ab8547f37d03b2b72a91edf3b52.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c9cfbe4744fd611c23674fd06ebd5826.png)
您最近一年使用:0次
名校
解题方法
10 . 已知数列
的通项公式为
,且
,
.
(1)求
的通项公式;
(2)求该数列的最大项.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/83cf38189d5cbf627d2b82ac0eb76006.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/6ff9c42b0c496f32f4b7394684a062fb.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/780a1b00ea3a4fec3069509041c84511.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/023ce93b99e33a130bc76ffd3d72a622.png)
(1)求
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/83cf38189d5cbf627d2b82ac0eb76006.png)
(2)求该数列的最大项.
您最近一年使用:0次
2022-04-15更新
|
736次组卷
|
4卷引用:4.1.1 数列的概念(练习)-2022-2023学年高二数学同步精品课堂(人教A版2019选择性必修第二册)
(已下线)4.1.1 数列的概念(练习)-2022-2023学年高二数学同步精品课堂(人教A版2019选择性必修第二册)四川省科学城第一中学2021-2022学年高一下学期3月月考数学试题(已下线)5.1 数列基础(分层练习,8大题型)-2023-2024学年高二数学同步精品课堂(人教B版2019选择性必修第三册)(已下线)1.1.2数列的函数特性(分层练习)-2023-2024学年高二数学同步精品课堂(北师大版2019选择性必修第二册)