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/a9875b5a21e007035dbf079af4617d3b.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b52e8c9b325aa8a5249ad77b341ba145.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d36243198e5e20c56399e4ad5ac3c519.png)
A.24或-16 | B.18或-3 | C.12或-9 | D.36或-12 |
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2020-05-30更新
|
416次组卷
|
2卷引用:山西省2019-2020学年高二下学期期中联考数学(文)试题
13-14高一下·江西南昌·期中
名校
2 . 已知等比数列
的前
项和为
,且
,
,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/942ec06e504421dc2f9d6082046f80f8.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/eb16046250e529120cadf26cc55e3d3a.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/1e6f112d093c0a1f9daaa34da4b84cf2.png)
A.![]() | B.![]() | C.![]() | D.![]() |
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2020-03-20更新
|
1453次组卷
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5卷引用:2013-2014学年江西省南昌市八一、洪都高一下学期期中考试数学试卷
(已下线)2013-2014学年江西省南昌市八一、洪都高一下学期期中考试数学试卷湖南省株洲市茶陵二中2019-2020学年高二上学期第二次月考数学试题山东省济南第一中学2019-2020学年高二10月阶段性检测数学试题湖北省十堰市第一中学2019-2020学年高一下学期4月月考数学试题(已下线)4.3 等比数列(精练)-2020-2021学年一隅三反系列之高二数学新教材选择性必修第二册(人教A版)
名校
3 . 已知等比数列
的前
项和为
,
,
,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/8c9b5080aa2e9c889aac8e378d83dfee.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/14c8ac53d3b18155206a9f3d3ae588e3.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/10d84adcf862cb7057595c4b9cbf6800.png)
A.60 | B.70 | C.80 | D.90 |
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2020-03-05更新
|
290次组卷
|
2卷引用:河南省林州市第一中学2019-2020学年高二上学期期中数学试题
4 . 已知数列
为各项均为正数的等比数列,
为其
前项和,
,
.
求数列
的通项公式;
若
,求
的最大值.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/63d471926f7b27322d90c82b9ce21d3d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/08eb71ecf8d733b6932f4680874dbbf3.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b6a24198bd04c29321ae5dc5a28fe421.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2693734765399876e9e93cdb110231c4.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/97f5c05fd185d13caadc3161ccdc68d3.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/9bf6c84731e5e1bd335ecfc2d36c3d81.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/63d471926f7b27322d90c82b9ce21d3d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/1f53190d6ead827a6338b9de847aeaf1.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c57437b5f72b3bad75d7436c990b0f36.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b6a24198bd04c29321ae5dc5a28fe421.png)
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2020-02-09更新
|
1328次组卷
|
2卷引用:2020届北京市海淀区高三上学期期中数学试题
名校
5 . 已知等比数列
的前
项和为
,若
,
,则![](https://staticzujuan.xkw.com/quesimg/Upload/formula/90c897ce0bbc7080146baccdb2bfb761.png)
________ .
![](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/4ccdc17b603871d20843ffccca2df0ae.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ce35821130b2f1835d98aefb34287d74.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/90c897ce0bbc7080146baccdb2bfb761.png)
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2019-12-27更新
|
644次组卷
|
5卷引用:四川省绵阳市三台县2019-2020学年下学期高一(期中)半期教学质量调研测数学试题
名校
6 . 等比数列的前
项和、前
项和、前
项和分别为
,则.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b6a24198bd04c29321ae5dc5a28fe421.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e2d51f9147b8265c0276c1f2c2659197.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/43f41be870e84c819362787849770519.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e3fb0c9c7e30bbc0ec8c3521577ee4fb.png)
A.![]() | B.![]() |
C.![]() | D.![]() |
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2019-09-13更新
|
403次组卷
|
2卷引用:四川省成都市金牛区第十八中学校2019-2020学年高一下学期期中数学试题
名校
7 . 设各项都是正数的等比数列{
},Sn为前n项和,且S10=10,S30=70,那么S40=______
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/96abfe2da27a63e6affb19a0c80236d9.png)
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2019-06-23更新
|
1184次组卷
|
3卷引用:【全国百强校】广西南宁市第三中学2018-2019学年高一下学期期中考试数学试题
名校
8 . 记
为等比数列
的前
项和,且
,
,则![](https://staticzujuan.xkw.com/quesimg/Upload/formula/9eab8f8926b996f9bee57d96067f5bac.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/08eb71ecf8d733b6932f4680874dbbf3.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/fe2d2bf20356e34d2759fa887bfc2505.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/caefbe78bb07b2455a067824af5afd57.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/9eab8f8926b996f9bee57d96067f5bac.png)
A.28 | B.36 | C.52 | D.64 |
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2019-06-12更新
|
997次组卷
|
2卷引用:福建省三明市第一中学2018-2019学年高一下学期学段考试(期中)数学试题
名校
9 . 设等比数列
前
项和为
,若
,则
( ).
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/034ba25825c13725931c483aa47c9363.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/582148dd52ef16739f00cdaae17594b0.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ce3c9ddc2bce6f5856b288254b13b22a.png)
A.![]() | B.![]() | C.![]() | D.![]() |
您最近一年使用:0次
名校
10 . 已知等比数列
的前n项和为
,则常数C=________
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/63d471926f7b27322d90c82b9ce21d3d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/10123b692b2aee3195411b4b8bdfc67c.png)
您最近一年使用:0次