1 . 已知等比数列
的前
项和为
,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/3f6bdfaa299fb6a90b08400c21349063.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/cb8e94f53122a401c305cca35c6309be.png)
A.41 | B.45 | C.36 | D.43 |
您最近一年使用:0次
2023-05-10更新
|
796次组卷
|
3卷引用:黑龙江省宾县第二中学2023-2024学年高三上学期期初学业质量检测数学试题
名校
2 .
,
是正项等比数列.且
,且
,
(1)求
的通项公式;
(2)设
,求数列
的前n项和
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/83cf38189d5cbf627d2b82ac0eb76006.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/034ba25825c13725931c483aa47c9363.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/9601e1941365bca8dbe7034a5b57e80d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ee3650c564625b7887d090dd50004e66.png)
(1)求
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/83cf38189d5cbf627d2b82ac0eb76006.png)
(2)设
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c5735123ce8ca6c58761ee4b789bb187.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/38ef4c4439b36c2847b0056a116d56d4.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f1ae9a3b0b7aeb1545b65d91aa371b3c.png)
您最近一年使用:0次
名校
3 . 在等比数列
中,如果
,那么![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c947dc30f6ebc564c71a6b2da14481ea.png)
__________ .
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/83cf38189d5cbf627d2b82ac0eb76006.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/861a816f3451b17e6df828c79a060cd9.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c947dc30f6ebc564c71a6b2da14481ea.png)
您最近一年使用:0次
名校
4 . 一个等比数列的前
项和为
,前
项和为
,则前
项和为( )
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b6a24198bd04c29321ae5dc5a28fe421.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5021dda43ea360fb7b1102c1a462693a.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e2d51f9147b8265c0276c1f2c2659197.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/3b3779b4ea5477aebfe85113b0de1d60.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/43f41be870e84c819362787849770519.png)
A.![]() | B.![]() | C.![]() | D.![]() |
您最近一年使用:0次
2017-06-20更新
|
1383次组卷
|
3卷引用:黑龙江省海林市朝鲜族中学2023-2024学年高二上学期第三次考试(期末)数学试卷