给出构造数列的一种方法:在数列的每相邻两项之间插入此两项的和,形成新的数列,再把所得数列按照同样的方法不断构造出新的数列.现自1,1起进行构造,第1次得到数列1,2,1,第2次得到数列1,3,2,3,1,…,第
次得到数列
,记
,数列
的前n项和为
,则( )
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ef65559a6b44930addc23adeb8d854c9.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/6199e9797dbc80ab3dc567acf9826c4a.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/3b81dc77f08b9f366ee1cce9dae5233c.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/83cf38189d5cbf627d2b82ac0eb76006.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/08eb71ecf8d733b6932f4680874dbbf3.png)
A.![]() | B.![]() | C.![]() | D.![]() |
2022·山东枣庄·三模 查看更多[5]
山东省枣庄市2022届高考适应性练习(一)数学试题(三模)湖北省黄石市大冶市第一中学2022届高三下学期高考适应性考试数学试题山东省烟台市2022届高考二模(枣庄市三模)数学试题(已下线)重难点07五种数列求和方法-1(已下线)技巧01 单选题和多选题的答题技巧(10大题型)(练习)
更新时间:2022-05-08 19:58:27
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相似题推荐
多选题
|
适中
(0.65)
解题方法
【推荐1】已知数列
的前
项和为
,
,且![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7c8251ae667250fb36ce4c0d75228317.png)
,则下列说法中正确的是( )
![](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/2693734765399876e9e93cdb110231c4.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7c8251ae667250fb36ce4c0d75228317.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/98877a1e72abfd69f545978de91e0b7b.png)
A.![]() | B.![]() |
C.![]() | D.![]() |
您最近一年使用:0次
【推荐2】设数列
的前n项和为
,若
,则下列结论正确的是( )
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/83cf38189d5cbf627d2b82ac0eb76006.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/08eb71ecf8d733b6932f4680874dbbf3.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/587851722d4d141d02af681e31d72c4d.png)
A.![]() |
B.![]() |
C.![]() |
D.![]() |
您最近一年使用:0次
【推荐1】已知
是公比
的正项等比数列
的前
项和,若
,
,则下列说法正确的是( )
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/08eb71ecf8d733b6932f4680874dbbf3.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/9aa8a716a31b0f51b70fdf9bdb257909.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/63d471926f7b27322d90c82b9ce21d3d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b6a24198bd04c29321ae5dc5a28fe421.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/25fc6e4698a74a39097e891812c976ae.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/105fd92af4a217572cc971e485b450c4.png)
A.![]() |
B.数列![]() |
C.![]() |
D.数列![]() |
您最近一年使用:0次
多选题
|
适中
(0.65)
解题方法
【推荐2】已知数列
满足
是
的前
项和,下列说法正确的是( )
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/62e567d7e9761951a266953c8d5042ac.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/65d4c5d884f1470964f2b8f511b23388.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/83cf38189d5cbf627d2b82ac0eb76006.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b6a24198bd04c29321ae5dc5a28fe421.png)
A.若![]() ![]() |
B.若![]() ![]() |
C.若![]() ![]() |
D.若![]() ![]() |
您最近一年使用:0次