23-24高二上·上海·课后作业
1 . 已知数列
的通项公式为
,
是否是该数列中的项?若是,是第几项?
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/83cf38189d5cbf627d2b82ac0eb76006.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d819265a67ccd52505a0c31c60ad0161.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/3ae88dbaf8722194196fc63e366ec542.png)
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23-24高二上·上海·课后作业
2 . 已知数列
的通项公式,写出这些数列的前5项.
(1)
;
(2)
.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/83cf38189d5cbf627d2b82ac0eb76006.png)
(1)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/634d5bf6ee5e77430771ab26c6464fa5.png)
(2)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/93d06cca106b1268beaa55675a8cbdb7.png)
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名校
3 . 已知数列
(
,
)的通项公式是
,则
是该数列中的第________ 项.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/83cf38189d5cbf627d2b82ac0eb76006.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e167b43045b3297248e334c41c621b8f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/dd4613271f782a90ab580131d09d03d1.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a289758ad89c98ffb9ae311919e905bb.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/dbff61fe9d4e93d7cc338489d1c99c40.png)
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2023-06-11更新
|
353次组卷
|
5卷引用:上海市曹杨第二中学2022-2023学年高二下学期期中数学试题
上海市曹杨第二中学2022-2023学年高二下学期期中数学试题上海市曹杨中学2022-2023学年高二下学期期中数学试题(已下线)模块二 专题4 《数列》单元检测篇 A基础卷(北师大2019版)(已下线)上海市曹杨第二中学2023-2024学年高二下学期期中考试数学试卷(已下线)4.1 数列的概念——课后作业(提升版)
解题方法
4 . 已知集合
,
.
中的所有元素按从小到大的顺序排列构成数列
,
为数列
的前
项的和.
(1)求
;
(2)如果
,
,求
和
的值;
(3)如果
,求
(用
来表示).
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d20f018e0d510b8446509a912f8db0a6.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/dbb09edea21e214eb96a7b121855c8cd.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b3744e71abf4b43e128eabea9181b712.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b4be2164a2c67d6163faee87a10942bb.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/08eb71ecf8d733b6932f4680874dbbf3.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b4be2164a2c67d6163faee87a10942bb.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b6a24198bd04c29321ae5dc5a28fe421.png)
(1)求
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5f3cf6f2bbe20a404fea41a4d2b1c4c7.png)
(2)如果
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e30909f32d34cac6422481a60917475c.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a4d65f106479ae794e4fd54f6797424f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/294f5ba74cdf695fc9a8a8e52f421328.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/36a1b09c653185842513e24ebba60bb3.png)
(3)如果
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a0e9007ddcca8c1eac1924d2db796e33.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/fcab407cb46d9a721098b04f085a248f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f0a532e15e232cb4b99a8d4d07c89575.png)
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