已知数列
满足
,
,
是数列
的前n项和,则![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7b8fa05c8934feeb57973e671bb8442e.png)
___ .
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/83cf38189d5cbf627d2b82ac0eb76006.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f23b06cfc455434bdbe71c2017582481.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b065334d8f60c49f4bd3d9f1373fe4cd.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/08eb71ecf8d733b6932f4680874dbbf3.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/83cf38189d5cbf627d2b82ac0eb76006.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7b8fa05c8934feeb57973e671bb8442e.png)
更新时间:2016-12-04 07:08:22
|
【知识点】 数列周期性的应用
相似题推荐
填空题-单空题
|
较易
(0.85)
【推荐1】已知数列
中,
,则![](https://staticzujuan.xkw.com/quesimg/Upload/formula/6ca53acfec1c2064d6197d3e42fd9ece.png)
_______________ .
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/83cf38189d5cbf627d2b82ac0eb76006.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d04005ec1e7cf48aa87ac46e37b3fbf1.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/6ca53acfec1c2064d6197d3e42fd9ece.png)
您最近一年使用:0次
填空题-单空题
|
较易
(0.85)
名校
解题方法
【推荐2】已知Sn是数列{an}的前n项和,若
,则
的值为_____ .
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/8e3f4d2a80121f8ff3849b2f363c3f2b.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a6f422edb72f7e1d5529a5570feb77df.png)
您最近一年使用:0次