已知数列
中各项为非负数,
,
,若数列
为等差数列,则
( )
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/83cf38189d5cbf627d2b82ac0eb76006.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f966272f7781790ff27e40db6b525253.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/097899de76881cab57ae4f6409662061.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c133f850a40f4d23c30fa91a1e7d74a2.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0382b4a2ab0657d2d6830bb6be2b17b6.png)
A.31 | B.49 | C.256 | D.361 |
20-21高一下·贵州黔东南·期末 查看更多[2]
更新时间:2022-05-03 10:38:57
|
相似题推荐
单选题
|
较易
(0.85)
名校
【推荐1】等差数列{an}的前n项和为Sn,且a3+a8=13,S7=35,则a8=( )
A.8 | B.9 | C.10 | D.11 |
您最近一年使用:0次
单选题
|
较易
(0.85)
名校
【推荐2】在等差数列
中,
,则
( )
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/83cf38189d5cbf627d2b82ac0eb76006.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f6bde4202de6218ac5dbc04741f7720f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/aa37e5661af68b263a3ed9030d4e9003.png)
A.16 | B.17 | C.18 | D.20 |
您最近一年使用:0次
单选题
|
较易
(0.85)
名校
【推荐1】记数列
的前
项和为
,已知
,
为等差数列,若
,则
( )
![](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)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/039e4fe671d61e59b96ee525c9df43e8.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7daf61f4e47de374185652d6e0524938.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/08dc43bd5299b7b71adc6f7a26c1f72b.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d8c1f8a91c5b1ba8310277fcf341eeae.png)
A.2 | B.![]() | C.![]() | D.![]() |
您最近一年使用:0次
单选题
|
较易
(0.85)
名校
【推荐2】在数列
中,
,对任意大于1的正整数
,点
在直线
上,那么
( )
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/83cf38189d5cbf627d2b82ac0eb76006.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b13a6e1d671215fc96e4bee3541d1096.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b6a24198bd04c29321ae5dc5a28fe421.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ded16a934f3a8704799589c551f30715.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f8d01dbb1f180298fd4217c93201514f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/047dbd9ff686703cad03aa383e5fec21.png)
A.5 | B.![]() | C.50 | D.75 |
您最近一年使用:0次