1 . 已知等比数列
的前
项和为
,若
,则![](https://staticzujuan.xkw.com/quesimg/Upload/formula/9eab8f8926b996f9bee57d96067f5bac.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/a8b0b5a6da3a03456eca900531fb14b4.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/9eab8f8926b996f9bee57d96067f5bac.png)
您最近一年使用:0次
2 . 已知等比数列
的前
项和为
,若
,且
成等差数列,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/039e4fe671d61e59b96ee525c9df43e8.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a1d1163138c1c2dcd840472dff7b0d40.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/9b2778e2dadff4d91102e6046bb5def8.png)
A.![]() | B.![]() | C.![]() | D.![]() |
您最近一年使用:0次
2024-04-16更新
|
680次组卷
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6卷引用:陕西省西安市西安中学2024届高三仿真考试(一)数学试题
陕西省西安市西安中学2024届高三仿真考试(一)数学试题四川省德阳市重点高中2024届高三诊断模拟考试(二)数学(理科)试题(已下线)第三套 艺体生新高考全真模拟 (二模重组卷)(已下线)第二套 艺体生新高考全真模拟 (二模重组卷)河南省信阳市浉河区信阳高级中学2024届高三下学期三模数学试题(已下线)专题2 关键能力与方法问题(单选题4-7)
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3 . 在等差数列
中,
,
.设
,记
为数列
的前n项和,若
,则
( )
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/83cf38189d5cbf627d2b82ac0eb76006.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b065334d8f60c49f4bd3d9f1373fe4cd.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0d29275f11876473e2e2d8ea769df23e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/95e191086446263b7bbbd93613577c42.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/08eb71ecf8d733b6932f4680874dbbf3.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/034ba25825c13725931c483aa47c9363.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c179319a983bda051c597ce8b0bcf8bc.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a6c57bbef89a37f1a3808c0ceeac0c22.png)
A.5 | B.6 | C.7 | D.8 |
您最近一年使用:0次
2024-04-13更新
|
637次组卷
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9卷引用:陕西省西安市部分学校2024届高三下学期高考模拟检测文科数学试卷
陕西省西安市部分学校2024届高三下学期高考模拟检测文科数学试卷江西省吉安市第一中学2024届高三三模数学试题吉林省部分名校(抚松县第一中学等)2023-2024学年高二下学期期中联考数学试卷(已下线)模块一专题1《数列基础、等差数列和等比数列》单元检测篇A基础卷(高二人教B版)(已下线)模块3 专题1 第1套 小题进阶提升练【高二人教B】(已下线)模块3 专题1 第4套 小题进阶提升练【高二人教B】(已下线)模块3 专题1 第3套 小题进阶提升练【高二人教B】(已下线)模块一 专题2《数列基础、等差数列和等比数列》单元检测篇A基础卷(高二北师大版)(已下线)北师大版高二模块三专题1第2套小题入门夯实练
名校
解题方法
4 . 已知等差数列
的公差为
,且
是
与
的等比中项,则数列
的前
项和为( )
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/83cf38189d5cbf627d2b82ac0eb76006.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/274a9dc37509f01c2606fb3086a46f4f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7fd71bc7e6668f90f259ad0b06dd60c2.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/6c1ccc6c74b8754e9bcbb3f39a11b6f1.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/bc858b7a95c5006a44067022da09f667.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/83cf38189d5cbf627d2b82ac0eb76006.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4b7f27ebcef70a3ebbbe8d2e53ea0896.png)
A.![]() | B.![]() | C.![]() | D.![]() |
您最近一年使用:0次
名校
5 . 已知等比数列
中,公比
,其前
项和
,则
( )
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/83cf38189d5cbf627d2b82ac0eb76006.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/26d9b6c86435e0ceff94d8ad1cd03737.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d91e07104b699c4012be2d26160976a2.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c7c2b1c2dc2584feb58fcae37b96e2a9.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/fbfc875ca919921e8f63a6fca648561b.png)
A.![]() | B.![]() | C.![]() | D.24 |
您最近一年使用:0次
6 . 已知等比数列的前
项和为
,若
,
,则
( )
A.![]() | B.3 | C.![]() | D.9 |
您最近一年使用:0次
解题方法
7 . 已知数列
满足
,若
,
,则![](https://staticzujuan.xkw.com/quesimg/Upload/formula/047dbd9ff686703cad03aa383e5fec21.png)
______ .
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/83cf38189d5cbf627d2b82ac0eb76006.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/9e6cbbec0f900da8864d00e396893c98.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0ea8d0e50065114b05ef2dc1ea1129cf.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/fb334e165679c6cb500c994cffa47147.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/047dbd9ff686703cad03aa383e5fec21.png)
您最近一年使用:0次
名校
8 . 在等比数列中,
,
,则
的公比是( )
A.2 | B.4 | C.![]() | D.![]() |
您最近一年使用:0次
9 . 已知数列
满足
,若
,
,则
( )
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/83cf38189d5cbf627d2b82ac0eb76006.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/9e6cbbec0f900da8864d00e396893c98.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f966272f7781790ff27e40db6b525253.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/6e0f78ff79e35f9b7d63a4e9add024a6.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/047dbd9ff686703cad03aa383e5fec21.png)
A.![]() | B.![]() | C.3 | D.5 |
您最近一年使用:0次
2024-03-22更新
|
483次组卷
|
2卷引用:陕西省渭南市三贤中学2024届高三下学期名校学术联盟高考模拟信息卷押题卷文科数学试题(一)
名校
解题方法
10 . 已知数列
的前
项和为
,且
.
(1)求数列
的通项公式;
(2)若
,求数列
的前
项和
.
![](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/f07ee1fd9cc31c46e4aa7500d074d958.png)
(1)求数列
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/83cf38189d5cbf627d2b82ac0eb76006.png)
(2)若
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e14eedc2934191808096c1808ca29f21.png)
![](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/f1ae9a3b0b7aeb1545b65d91aa371b3c.png)
您最近一年使用:0次
2024-03-21更新
|
830次组卷
|
4卷引用:陕西省安康市高新中学2024届高三下学期5月适应性试题(二)文科数学试题