名校
1 . 已知公差不为零的等差数列
,首项
,若
,
,
成等比数列,记
(
,),则数列
( )
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/83cf38189d5cbf627d2b82ac0eb76006.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/8dc759e6f45cff8dacef4206490e98a3.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/3e88093a749c0d46e0ee931ecfaff925.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/daf464629fa321a6ff7401ab79f07083.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f65fc200f10b97588a0c9896277c9c64.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/392a8f641017f5df07890012bd80eec6.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/42bab065e6362b760b5eec5b969c204c.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/de777c4e44546bcfe26ad5b6bb418052.png)
A.有最小项,无最大项 | B.有最大项,无最小项 |
C.无最大项,无最小项 | D.有最大项,有最小项 |
您最近一年使用:0次
2022-03-10更新
|
1109次组卷
|
6卷引用:北京平谷区2022届高三零模数学试题
北京平谷区2022届高三零模数学试题(已下线)专题17 等差数列等比数列-2022届高考数学一模试题分类汇编(新高考卷)(已下线)考点14 等差数列与等比数列(核心考点讲与练)-2023年高考数学一轮复习核心考点讲与练(新高考专用)陕西省咸阳市礼泉县第二中学2022-2023学年高二上学期第一次月考数学试题 上海市育才中学2023届高三下学期3月月考数学试题北京市东城区2023届高三一模数学试题查漏补缺练习试题(1)
2 . 已知数列
,具有性质P:对任意
(
)
与
,两数中至少有一个是该数列中的一项,
为数列
的前
项和.
(1)分别判断数列0,1,3,5与数列0,2,4,6是否具有性质P:
(2)证明:
且
;
(3)证明:当
时,
成等差数列.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/338ab0618ddda6e7eeba8a14c2655833.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/cb18c6dbf63138dd5cf7cae946c106e7.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/31ae331839bce8f3c14d7efd7f9d8915.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/3541598c0e0e6d5050c5a562515c430e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b13ee542834ccbb57fcc55b1680ca9db.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/08eb71ecf8d733b6932f4680874dbbf3.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5963abe8f421bd99a2aaa94831a951e9.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b6a24198bd04c29321ae5dc5a28fe421.png)
(1)分别判断数列0,1,3,5与数列0,2,4,6是否具有性质P:
(2)证明:
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/9c1fe4c51169a32e05e4be4acb3d1f21.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/3dc31cec2f263c4fbed39962f960daef.png)
(3)证明:当
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e45cf86650443d1b86c79b1e3edc7e5c.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/8bd49c085be2656091b79da53f010a1a.png)
您最近一年使用:0次
2021-03-25更新
|
942次组卷
|
3卷引用:北京平谷区2021届高三数学一模试题