1 . 已知数列
满足:
,
.
(1)求证
是等比数列,并求数列
的通项公式;
(2)求使不等式
成立的所有正整数m,n的值.
![](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/79d0544c1308b210630a8a638560e66f.png)
(1)求证
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4599c3dcf05d964c4e67e2437e718580.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/83cf38189d5cbf627d2b82ac0eb76006.png)
(2)求使不等式
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/09a312229e8ac42ed682213bf056bb99.png)
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名校
解题方法
2 . 已知数列
的前n项和为
,且对任意正整数n都有
.
(1)求数列
的通项公式;
(2)若
(n为正整数),求数列
的前n项和
;
(3)若
(n为正整数),且不等式
对任意正整数n都成立,求实数t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/45c75abdabd4387bba5abfd7c620712f.png)
(1)求数列
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/83cf38189d5cbf627d2b82ac0eb76006.png)
(2)若
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/320dc69d2a8b65b2a9dfda21be4f4b79.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/034ba25825c13725931c483aa47c9363.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f1ae9a3b0b7aeb1545b65d91aa371b3c.png)
(3)若
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b23a411cdce71ea3ef5da8b87bd53400.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/23ae4e70bd42078bb52b178cd60c997f.png)
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3 . 已知数列
满足:
.
(1)求证:数列
是等比数列;
(2)求数列
的通项公式及其前
项和
.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/83cf38189d5cbf627d2b82ac0eb76006.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/1b6fa372f15b2ea0818ae98e0fb0f4fb.png)
(1)求证:数列
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/78b7d291b36c6723e3bdf69712550e25.png)
(2)求数列
![](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)
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2023-10-12更新
|
1965次组卷
|
14卷引用:上海市杨浦高级中学2022-2023学年高一下学期开学考试数学试题
上海市杨浦高级中学2022-2023学年高一下学期开学考试数学试题上海外国语大学附属外国语学校2022-2023学年高二下学期期中数学试题(已下线)第4章 数列(基础、典型、易错、压轴)-【满分全攻略】2022-2023学年高二数学下学期核心考点+重难点讲练与测试(沪教版2020选修一+选修二)湖北省荆州市公安县第三中学2022-2023学年高二下学期3月月考数学试题江西省宜春市第三中学2022-2023学年高二下学期期中考试数学试题云南省宣威市第三中学2022-2023学年高二下学期第二次月考数学试题(已下线)模块二 专题1 数列 A基础卷(人教A)黑龙江省宾县第二中学2023-2024学年高三上学期期初学业质量检测数学试题甘肃省白银市白银区大成学校2023-2024学年高二上学期月考(一)数学试题陕西省汉中市2024届高三上学期第二次校际联考模拟预测文科数学试题陕西省汉中市2024届高三上学期第二次校际联考模拟预测理科数学试题江苏省连云港市连云港高级中学2023-2024学年高二上学期期中数学试题山东省菏泽市菏泽外国语学校2023-2024学年高二上学期第二次月考数学试题(已下线)黄金卷04
23-24高二上·上海·课后作业
解题方法
4 . 如图所示,有三根针和套在一根针上的若干金属片,按下列规则,把金属片从一根针上全部移到另一根针上.
(1)每次只移动
个金属片;
(2)较大的金属片不能放在较小的金属片上面;
试推测:把
个金属片从
号针移动到
号针,最少需要移动多少次?
![](https://img.xkw.com/dksih/QBM/editorImg/2023/9/13/747cb4e0-c189-4e8b-9480-273d40b2417c.png?resizew=168)
(1)每次只移动
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/bdaa19de263700a15fcf213d64a8cd57.png)
(2)较大的金属片不能放在较小的金属片上面;
试推测:把
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b6a24198bd04c29321ae5dc5a28fe421.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/bdaa19de263700a15fcf213d64a8cd57.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5ca7d1107389675d32b56ec097464c14.png)
您最近一年使用:0次
23-24高二上·上海·课后作业
5 . 已知数列
的递推公式为![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ad1e22ab15c617e8c8ab8fc9613631b8.png)
(1)求证:
为等比数列;
(2)求
的通项公式.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/83cf38189d5cbf627d2b82ac0eb76006.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ad1e22ab15c617e8c8ab8fc9613631b8.png)
(1)求证:
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/6e2de706dc5f0439b989273a5367f63a.png)
(2)求
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/83cf38189d5cbf627d2b82ac0eb76006.png)
您最近一年使用:0次
23-24高二上·上海·课后作业
6 . 图中的三角形图案称为谢宾斯基三角形.在下图四个三角形图案中,着色的小三角形的个数依次排列成一个数列的前四项,请写出其前四项,并给出这个数列的一个通项公式.
![](https://img.xkw.com/dksih/QBM/editorImg/2023/9/14/edfaa7d8-5e5d-4bf4-8902-048e6437bcb1.png?resizew=328)
您最近一年使用:0次
23-24高二上·上海·课后作业
7 . 已知数列
满足:
,
.
(1)求证:
为等比数列;
(2)求
的通项公式.
![](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/a08146b691fbff14c5ba44f12ae31f20.png)
(1)求证:
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/8d17d72d1d20d385920c3d9da6bed8bb.png)
(2)求
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/83cf38189d5cbf627d2b82ac0eb76006.png)
您最近一年使用:0次
23-24高二上·上海·课后作业
8 . 某种放射性物质不断衰变为其他物质,设每经过一年剩留的这种放射性物质是年初的84%,这种放射性物质的半衰期为多长?(精确到1年)参考数据:
.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/776bb60901cb1b3b8c1ce226a7dcbb5c.png)
您最近一年使用:0次
23-24高二上·上海·课后作业
解题方法
9 . 根据下列条件,求相应的等比数列
的前
项和
:
(1)
,
,
;
(2)
,
,
.
![](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)
(1)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b13a6e1d671215fc96e4bee3541d1096.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/26d9b6c86435e0ceff94d8ad1cd03737.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7c345907ebe27888332b1b44c666cc47.png)
(2)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ae578543103f674e5ad67c5439ef7039.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b331f0c2ad289ef8161b7e59264a75a3.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/182035ef95a17e42cd7609854ff35368.png)
您最近一年使用:0次
23-24高二上·上海·课后作业
解题方法
10 . 在等比数列
中,
(1)已知
,
,求
;
(2)已知
,
,
,求
;
(3)已知
,
,求
;
(4)已知
,
,求
.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/83cf38189d5cbf627d2b82ac0eb76006.png)
(1)已知
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b1549723d901eeb2cf966e322f404a5a.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/26d9b6c86435e0ceff94d8ad1cd03737.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f65fc200f10b97588a0c9896277c9c64.png)
(2)已知
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b065334d8f60c49f4bd3d9f1373fe4cd.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/26d9b6c86435e0ceff94d8ad1cd03737.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a18478d43bfc50b012b917650bd5a3a8.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b6a24198bd04c29321ae5dc5a28fe421.png)
(3)已知
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/14835bf3f00139ccec0694d0924db795.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/73e84a64684884dab5b38122de557e16.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/9aa8a716a31b0f51b70fdf9bdb257909.png)
(4)已知
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/6fb67894440686221396274230bbfc9c.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d6ddaf264580b9c4432cb2eb3c9a4e02.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e72adb45c60c2f63b46e65ff787302bf.png)
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