名校
1 . 九连环是我国从古至今广泛流传的一种益智游戏,它用九个圆环相连成串,以解开为胜.据明代杨慎《丹铅总录》记载:“两环互相贯为一,得其关捩,解之为二,又合而为一”.在某种玩法中,用
表示解下n(
,
)个圆环所需的最少移动次数,若
,且
,则解下6个环所需的最少移动次数为( )
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/96abfe2da27a63e6affb19a0c80236d9.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/6842fb24ab3b2235b66ca392ebcbc0be.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e145b6046bc80d0ffecc61ac67c87ca1.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b065334d8f60c49f4bd3d9f1373fe4cd.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0d4ab0a5fa4a5d0d2ee2f4c93746ee39.png)
A.13 | B.15 | C.16 | D.29 |
您最近一年使用:0次
2022-01-27更新
|
393次组卷
|
8卷引用:江西省景德镇一中2022-2023学年高二(18班)上学期期中考试数学试题
解题方法
2 . 已知数列
的各项均为正数,记
为数列
的前n项和,
,
,则
( )
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/83cf38189d5cbf627d2b82ac0eb76006.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/846fa57d92d6ad44d6a0cafad1e71ed4.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/83cf38189d5cbf627d2b82ac0eb76006.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/40b9d5a12ec983a396271a33656c06cd.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b065334d8f60c49f4bd3d9f1373fe4cd.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/9620357ea5be4037cfdccd09a27d3862.png)
A.13 | B.14 | C.15 | D.16 |
您最近一年使用:0次
2022-01-25更新
|
774次组卷
|
4卷引用:江西省赣州市2022届高三上学期期末数学(理)试题
江西省赣州市2022届高三上学期期末数学(理)试题(已下线)秘籍05 数列-备战2022年高考数学抢分秘籍(全国通用)(已下线)第4章 数列(基础30题专练)-2021-2022学年高二数学考试满分全攻略(人教A版2019选修第二册+第三册)甘肃省兰州市第五十七中学2022-2023学年高三下学期开学模拟考试(文科)数学试题
名校
解题方法
3 . 已知等差数列
满足
,数列
满足
,记数列
的前n项和为
,则使
达到最大值的n值为( )
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/83cf38189d5cbf627d2b82ac0eb76006.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/da9f28d5ba472bbd67e49754dad7257e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/034ba25825c13725931c483aa47c9363.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/1517c9c8dbd06b6dce86af3b37dd7c50.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/08eb71ecf8d733b6932f4680874dbbf3.png)
A.5 | B.6 | C.7 | D.8 |
您最近一年使用:0次
2022-01-25更新
|
374次组卷
|
3卷引用:江西省赣州市2022届高三上学期期末数学(理)试题
2022高三·全国·专题练习
解题方法
4 . 已知数列
,
,
满足:
,若
是首项为2,公比为2的等比数列,
,则数列
的前
项的和是( )
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/63d471926f7b27322d90c82b9ce21d3d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5fce83115a50f99e08e9a2db7267aeed.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/38ef4c4439b36c2847b0056a116d56d4.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e07ce0e3105c195498b005e0f32c9929.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5fce83115a50f99e08e9a2db7267aeed.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/67212bd8e5e40ff71626d785b3e91584.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/136973c84a37f93caff0e5164b076457.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b6a24198bd04c29321ae5dc5a28fe421.png)
A.![]() | B.![]() |
C.![]() | D.![]() |
您最近一年使用:0次
名校
解题方法
5 . 已知数列
满足
,
,
,(π≈3.14)则此数列项数最多为( )
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/63d471926f7b27322d90c82b9ce21d3d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b13a6e1d671215fc96e4bee3541d1096.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0862a31298d6b66de73ab3b60d645cc5.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/9bd6b22c36fc8700c2b58519c6629c68.png)
A.2019项 | B.2020项 |
C.2021项 | D.2022项 |
您最近一年使用:0次
2021-11-05更新
|
923次组卷
|
4卷引用:江西省赣州市南康区唐江中学2022-2023学年高二下学期期中数学试题
江西省赣州市南康区唐江中学2022-2023学年高二下学期期中数学试题浙江省2022届高考模拟卷数学试题(三)(已下线)专题07 数列的通项与数列的求和(讲)--第一篇 热点、难点突破篇-《2022年高考数学二轮复习讲练测(新高考·全国卷)》(已下线)考点23 数列的通项公式-备战2022年高考数学典型试题解读与变式
解题方法
6 . 设数列
满足
,且
,则
( )
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/83cf38189d5cbf627d2b82ac0eb76006.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0ea8d0e50065114b05ef2dc1ea1129cf.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/cdc1ccd1891d1a33e7eae5c784ccda7e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/3ebe62e215327d4eccab6e5699e10ec6.png)
A.![]() | B.![]() | C.![]() | D.![]() |
您最近一年使用:0次
2023-04-06更新
|
315次组卷
|
2卷引用:江西省宜春市丰城市东煌学校2023-2024学年高二下学期6月月考数学试题
名校
解题方法
7 . 已知数列
满足:
,若将数列
的每一项按照下图方法放进格子里,每一小格子的边长为1,记前n项所占的格子的面积之和为
,每段螺旋线与其所在的正方形所围成的扇形面积为
.现有如下命题:
;
;
;
﹒则下列选项正确的是( )
![](https://img.xkw.com/dksih/QBM/2021/12/26/2881033752829952/2886395253309440/STEM/07808cc8-f276-4104-a171-f399c94980ff.png?resizew=301)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/83cf38189d5cbf627d2b82ac0eb76006.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/dfea962e3d389da41169198fee8d6d5f.png)
![](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/c59e7c7a84a4bdb959e95536d0404ceb.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/8cdf99e9815712c0a9a49b6eade74dca.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/333606d51c1d40b56deb6dd795e7b46f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d97e785705a6a466721f411904293ee7.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/60fb95b0459220e3762f3ce736bb3031.png)
![](https://img.xkw.com/dksih/QBM/2021/12/26/2881033752829952/2886395253309440/STEM/07808cc8-f276-4104-a171-f399c94980ff.png?resizew=301)
A.![]() | B.![]() | C.![]() | D.![]() |
您最近一年使用:0次
2022-01-03更新
|
635次组卷
|
2卷引用:江西省南昌市第十九中学2024届高三上学期模拟数学试题
名校
8 . 若数列
满足
,且
,则
的前100项和为( )
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/83cf38189d5cbf627d2b82ac0eb76006.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/23ca94d2bbdc99cdd6541ccb26cab58c.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0a97aa79f9746d819f37958c3f240965.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/83cf38189d5cbf627d2b82ac0eb76006.png)
A.67 | B.68 | C.134 | D.167 |
您最近一年使用:0次
2021-11-12更新
|
1450次组卷
|
4卷引用:江西省九江市六校2021-2022学年上学期高二期中考试数学(理)试题
江西省九江市六校2021-2022学年上学期高二期中考试数学(理)试题河北省唐县第一中学2021-2022学年高二(普通部)上学期期中数学试题(已下线)专题23 数列的基本知识与概念 -1(已下线)第1讲 数列的基本知识与概念5种题型(1)
9 . 已知数列
中,
,
,则数列
的通项公式为( )
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/83cf38189d5cbf627d2b82ac0eb76006.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/352d9b76dcf639368fa68cae70149802.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/14a63b7a236b516d9e2f1f2c6aa08025.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/83cf38189d5cbf627d2b82ac0eb76006.png)
A.![]() | B.![]() | C.![]() | D.![]() |
您最近一年使用:0次
2021-10-18更新
|
1035次组卷
|
3卷引用:江西省全南中学2022-2023学年高二下学期期末教学质量验收数学试题
名校
10 . 若数列
是等差数列,数列
满足
,
的前n项和用
表示,若
中满足
,则当
取得最大值时,n的值为( )
![](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/9fa346f369e6272b05fdf1fdba338fb2.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/83cf38189d5cbf627d2b82ac0eb76006.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/3e252e470fdfcf33ff944beac0725c84.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/08eb71ecf8d733b6932f4680874dbbf3.png)
A.14 | B.15 | C.16 | D.17 |
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