在等差数列
中,有
,则此数列的前13项之和为
![](https://img.xkw.com/dksih/QBM/2012/8/13/1570966910205952/1570966914908160/STEM/a1ed643e88034443b406658dc4e6c660.png)
![](https://img.xkw.com/dksih/QBM/2012/8/13/1570966910205952/1570966914908160/STEM/912fa1239f1742be8ba89e74704ce66a.png)
A.24 | B.39 | C.52 | D.104 |
9-10高二·辽宁本溪·假期作业 查看更多[1]
(已下线)2011届本溪县高二暑期补课阶段考试数学卷
更新时间:2016-11-30 08:11:09
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【知识点】 等差数列
相似题推荐
单选题
|
较易
(0.85)
解题方法
【推荐1】已知数列
满足
,
,
,则数列
前13项的和等于( )
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/83cf38189d5cbf627d2b82ac0eb76006.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/17b7f7801419a5fcdf4d52ac072b57fd.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/388c2d0762036d29bbc5d0b8459581c4.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/9f370a8d02b4aa7109ab4a37d60528b8.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/83cf38189d5cbf627d2b82ac0eb76006.png)
A.162 | B.182 | C.234 | D.346 |
您最近一年使用:0次
单选题
|
较易
(0.85)
名校
解题方法
【推荐2】已知等差数列
满足
,前
项和为
,则
( )
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/83cf38189d5cbf627d2b82ac0eb76006.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/9538ededb840cb0b8a77570e7ee03cca.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/dc4e70b360f988fdbd92300ab22c4613.png)
A.6 | B.10 | C.12 | D.14 |
您最近一年使用:0次