名校
1 . 已知
,
,
,
和
,
,
,
,
分别是两个公差不为零的等差数列,则下列说法正确的是( )
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0a6936d370d6a238a608ca56f87198de.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c814128ea2139e33db94ea590e7c2223.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/aec19b68e3add9d5bfcc6269a1855b87.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2c94bb12cee76221e13f9ef955b0aab1.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0a6936d370d6a238a608ca56f87198de.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/54015ff5b49e3283901da1291b6b921d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/46f6872ffb1934339c53c2c2282d5889.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/9314bd1d7a6e070f4f2428f9a321804e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2c94bb12cee76221e13f9ef955b0aab1.png)
A.![]() | B.![]() |
C.![]() | D.![]() |
您最近一年使用:0次
名校
2 . 已知
为等差数列,
,则
的值为________ .
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/83cf38189d5cbf627d2b82ac0eb76006.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b1b4f57c52f18e681ce01e91ca8bac1f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/27c4740129f15112fd1d0b838f61e9b2.png)
您最近一年使用:0次
2023-12-19更新
|
827次组卷
|
4卷引用:青海省西宁市海湖中学2023-2024学年高二下学期开学考试数学试卷
名校
3 . 在等差数列中,若
,则
( )
A.13 | B.26 | C.39 | D.52 |
您最近一年使用:0次
2023-10-07更新
|
1316次组卷
|
6卷引用:青海省西宁市大通县2023-2024学年高二上学期期末考试数学试题
青海省西宁市大通县2023-2024学年高二上学期期末考试数学试题甘肃省永昌县第一高级中学2023-2024学年高二上学期第一次月考数学试题(已下线)4.2 等差数列(1)(已下线)第4.2.1讲 等差数列的性质及应用(第2课时)-2023-2024学年新高二数学同步精讲精练宝典(人教A版2019选修第二、三册)(已下线)第02讲 4.2.1等差数列的概念(1)(已下线)专题4.2 等差数列(5个考点八大题型)(1)
4 . 在等差数列
中,
,
,则![](https://img.xkw.com/dksih/QBM/2016/5/10/1572629619736576/1572629625372672/STEM/0ddf746cfa22441082afcffdfa169871.png)
![](https://img.xkw.com/dksih/QBM/2016/5/10/1572629619736576/1572629625372672/STEM/12e1ed5e004a4c8eaa052ca956ff2c95.png)
![](https://img.xkw.com/dksih/QBM/2016/5/10/1572629619736576/1572629625372672/STEM/d9a350c39ef443a7acbb965718356f98.png)
![](https://img.xkw.com/dksih/QBM/2016/5/10/1572629619736576/1572629625372672/STEM/9164b0618ac44e749606ac6446ecb2d7.png)
![](https://img.xkw.com/dksih/QBM/2016/5/10/1572629619736576/1572629625372672/STEM/0ddf746cfa22441082afcffdfa169871.png)
A.5 | B.8 | C.10 | D.14 |
您最近一年使用:0次