1 . 记
为递增等比数列
的前n项和,若
,则
的值为___________ .
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/08eb71ecf8d733b6932f4680874dbbf3.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b4be2164a2c67d6163faee87a10942bb.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c22c204f225c54f197979c8084f38f3b.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5f3cf6f2bbe20a404fea41a4d2b1c4c7.png)
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2021-03-22更新
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804次组卷
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2卷引用:广西南宁市2021届高三下学期第一次适应性测试数学(理)试题
名校
2 . 记
为等比数列
的前
项和,若
,
,则
的值为__________ .
![](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/b6a24198bd04c29321ae5dc5a28fe421.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/9c9b6e51986fe5d7a7265e0e93adcb4d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/097899de76881cab57ae4f6409662061.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2a48e81b54f78b96294295542b010dfb.png)
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2021-03-21更新
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762次组卷
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6卷引用:广西南宁市2021届高三一模数学(文)试题
解题方法
3 . 已知数列
满足
,
,则该数列的通项公式是___________ .
![](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/703478a36a436801e818c3fe627537e2.png)
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2021-12-24更新
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697次组卷
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3卷引用:广西河池市八校2021-2022学年高二上学期第二次联考数学(理)试题
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解题方法
4 . 数列
的前
项和
满足
,则数列
的通项公式![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e3f7fda69e2b32b9ced2239f915fa59b.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/c8370a173854471a3eb27637993a3d5d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/83cf38189d5cbf627d2b82ac0eb76006.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e3f7fda69e2b32b9ced2239f915fa59b.png)
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2020-11-28更新
|
941次组卷
|
4卷引用:广西桂林市2020-2021学年高二上学期期末数学(文)试题
名校
5 . 已知等差数列
的前
项和为
,
,则![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a24953fa0302593a78ee81d9b6ac3e74.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/08eb71ecf8d733b6932f4680874dbbf3.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d37efc095e2fcabfb8ba5b69f9f6ec2d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a24953fa0302593a78ee81d9b6ac3e74.png)
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2019-03-26更新
|
1476次组卷
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4卷引用:广西贺州市昭平县昭平中学2020-2021学年高一上学期期末考试数学试题
名校
6 . 已知等比数列
的前
项和为
,则数列的通项公式![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e3f7fda69e2b32b9ced2239f915fa59b.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/edde9b4e25a82706e8c8339bb23462c8.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e3f7fda69e2b32b9ced2239f915fa59b.png)
您最近一年使用:0次
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7 . 若等比数列
的各项均为正数且
,则![](https://staticzujuan.xkw.com/quesimg/Upload/formula/1894b67d483f97ec4aff564a81cc6da2.png)
_____ .
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/63d471926f7b27322d90c82b9ce21d3d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/975e18ef7e59bc76e681d291a525e348.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/1894b67d483f97ec4aff564a81cc6da2.png)
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2021-02-05更新
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720次组卷
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3卷引用:广西桂林市2020-2021学年高二年级上学期期末数学(理)试题
8 . 设等比数列
的公比为2,前
项和为
,则![](https://staticzujuan.xkw.com/quesimg/Upload/formula/16b326c94e02d84a19bd6a12bf8e15ff.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/16b326c94e02d84a19bd6a12bf8e15ff.png)
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2020-11-28更新
|
881次组卷
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6卷引用:广西北海市2021届高三第一次模拟考试数学(文)试题
21-22高三上·广西柳州·阶段练习
名校
解题方法
9 . 设数列an前n项和为Sn,若a1=1,
,则![](https://staticzujuan.xkw.com/quesimg/Upload/formula/04c2864e2ec3416cc4c081ac1f71a0af.png)
_____ .
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b11a9f6d4f6a6ad478a7eee02dbfacdf.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/04c2864e2ec3416cc4c081ac1f71a0af.png)
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2021-10-04更新
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588次组卷
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5卷引用:广西柳州铁一中学“韬智杯”2022 届高三上学期大联考数学(文)试题
(已下线)广西柳州铁一中学“韬智杯”2022 届高三上学期大联考数学(文)试题广西普通高中2022 届高三10月大联考数学(文)试题(已下线)专题09 数列(选择题、填空题)-备战2022年高考数学(文)母题题源解密(全国甲卷)西藏拉萨中学2022届高三第六次月考数学(理)试题西藏拉萨中学2022届高三第六次月考数学(文)试题
名校
10 . 已知公差不为0的等差数列{an},若a2+a4+a6+…+a2n=a5a7,a1+a3+a5+…+a2n﹣1=a5a6,且S2n=240,则公差d=__ .
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2021-04-22更新
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4卷引用:广西师大附属外国语学校2021届高三5月高考考前模拟考试数学(理)试题
广西师大附属外国语学校2021届高三5月高考考前模拟考试数学(理)试题(已下线)第04章 数列(B卷提高卷)-2020-2021学年高二数学选择性必修第二册同步单元AB卷(新教材人教A版)(已下线)第四章数列 核心专项练习-【提升专练】2021-2022学年高二数学新教材同步学案+课时对点练(苏教版2019选择性必修第一册)天津市六校(静海一中,杨村中学,宝坻一中,大港一中等)2019-2020学年高二上学期期中联考数学试题