1 . 设数列
的首项
,且![](https://staticzujuan.xkw.com/quesimg/Upload/formula/38a91e4550dbe86a97994e85f51716b8.png)
,记
,
.
(1)求
;
(2)判断
是否为等比数列,并证明你的结论;
(3)求
.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b4be2164a2c67d6163faee87a10942bb.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/fa36c6f0bda099f69a18671da5184793.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/38a91e4550dbe86a97994e85f51716b8.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/31e36bff57bcfa86432b340e25e51d42.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4f59383e56a52c91236ad946a9093b25.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/3bce6187f3f11e0ceead8a645f5f9d32.png)
(1)求
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/fe61d313eeca8ba47478a9de40540db8.png)
(2)判断
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/43b7e7cd571c8cd141cbbfe5d0890bf6.png)
(3)求
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/cffa1a4365910d2586147e4390b6c9f0.png)
您最近一年使用:0次
2020-06-27更新
|
295次组卷
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5卷引用:2005年普通高等学校招生考试数学(理)试题(北京卷)
2005年普通高等学校招生考试数学(理)试题(北京卷)上海嘉定区安亭高级中学2019-2020学年高二上学期第一次月考数学试题沪教版(上海) 高二第一学期 新高考辅导与训练 第7章 数列与数学归纳法 本章复习题沪教版(上海) 高三年级 新高考辅导与训练 第四章 数列与数学归纳法 四、数列的极限(已下线)考向15 等比数列-备战2022年高考数学一轮复习考点微专题(上海专用)
2 . 已知点的序列
,其中
.(
是线段
的中点,
是线段
的中点,……,
是线段
的中点,…)
(1)写出
与
之间的关系
;
(2)设
,计算
,由此推测数列
的通项公式,并且加以证明;
(3)求
.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/6efe8e23ba28b415fe26cd742e0fda1a.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f5e883f1d1fb1235fdcebbdddc10260f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/62a7d8ddf2222c69472646efc47ff424.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/473913c0887bb64d386f4c02f1853452.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/9e47cd514b2920609e3781c87df6ab70.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/11603c89c66f064b263af841dae023f4.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d3cfeacc29e6a61c5b3b4e439c0a91df.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/69a4f2bafc3346d14a8967ce2546157d.png)
(1)写出
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/3282e5fde4ae53fcb1bb072a685304c9.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/217df7d069af637f4a9edefb9d2b10c6.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/80be0c3c50d2bd6230b53fbd056122df.png)
(2)设
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5c775fc62e7696028a9184e5212f0446.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/97c14d9ae06f864498048d55088ff4e6.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/83cf38189d5cbf627d2b82ac0eb76006.png)
(3)求
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ea5542cfe5ed49d02ad4c2e81de092a2.png)
您最近一年使用:0次
2020-06-26更新
|
352次组卷
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3卷引用:2002年普通高等学校春季招生考试数学(理)试题(北京卷)
3 . 如图,在边长为l的等边三角形
中,
为
的内切圆,
与
外切,且与
相切,……,
与
,外切,且与
相切,如此无限下去,记
的面积为
.
![](https://img.xkw.com/dksih/QBM/editorImg/2022/10/26/73f1dd5b-5e53-4d73-930e-f70b626743e7.png?resizew=199)
(1)证明
是等比数列;
(2)求
的值.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7bef5239ddbb0972700ce01daf9ee7cf.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0385df6c7f8ee7ab503b6ed35933695b.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/15c0dbe3c080c4c4636c64803e5c1f76.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/6cd73875650e1538c4c61d5e16d3db29.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0385df6c7f8ee7ab503b6ed35933695b.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/374fe9986ebbc986fc422e514ab93a51.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7a8c35a55e727bdce4b784194a2fed96.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d3ac6e9b691170b86e31939cfc056ef8.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/374fe9986ebbc986fc422e514ab93a51.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d3ac6e9b691170b86e31939cfc056ef8.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4560c3ab498f2b5aaef05df664315703.png)
![](https://img.xkw.com/dksih/QBM/editorImg/2022/10/26/73f1dd5b-5e53-4d73-930e-f70b626743e7.png?resizew=199)
(1)证明
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/83cf38189d5cbf627d2b82ac0eb76006.png)
(2)求
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f64cb00a5c8fa39c1c902cf5aa59930d.png)
您最近一年使用:0次
2020-06-26更新
|
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6卷引用:2003 年普通高等学校春季招生考试数学(文)试题(北京卷)