1 . 已知数列
为等比数列,
,
,则![](https://staticzujuan.xkw.com/quesimg/Upload/formula/3bb7147e313f9d9f67d19ecb5f499c05.png)
______ .
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/83cf38189d5cbf627d2b82ac0eb76006.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/259b2e755105c0ee479eabf7265a76a4.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d2f236846ca02c90b7633fda2d1a9a82.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/3bb7147e313f9d9f67d19ecb5f499c05.png)
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2 . 已知数列
是公差不为0的等差数列,数列
为等比数列,数列
的前三项分别为
,则数列
的公比是__________ .
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/83cf38189d5cbf627d2b82ac0eb76006.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/8ec07a126ada2c921c5b4337f77854cf.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/24653e3a6150f8c0a5a99529163b3bac.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/def3d150a5bff75b74dde1e373f31b75.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/8ec07a126ada2c921c5b4337f77854cf.png)
您最近一年使用:0次
解题方法
3 . 已知等比数列
的前
项和为
,数列
的前
项和为
.若
,则![](https://staticzujuan.xkw.com/quesimg/Upload/formula/614306cc3f34bdee4d5d885b79667645.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/41cf1da18d91f7c98086553d157d1a87.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b6a24198bd04c29321ae5dc5a28fe421.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f1ae9a3b0b7aeb1545b65d91aa371b3c.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/120df84d1991d54f2a37ccf087f9546b.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/614306cc3f34bdee4d5d885b79667645.png)
您最近一年使用:0次
4 . 在正项等比数列
中,若
是
与
的等差中项,则数列
的公比![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ad0d99fef1aa4dbcc6dc7b30b7d2c9a9.png)
______ .
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/83cf38189d5cbf627d2b82ac0eb76006.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f65fc200f10b97588a0c9896277c9c64.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e59270a26ebfc8efaf2b7ddaa811b306.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7424d969bcb8eb604d42426448e7b7c7.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/83cf38189d5cbf627d2b82ac0eb76006.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ad0d99fef1aa4dbcc6dc7b30b7d2c9a9.png)
您最近一年使用:0次
解题方法
5 . 已知数列
的首项
,且数列
是以
为公差的等差数列,则![](https://staticzujuan.xkw.com/quesimg/Upload/formula/fbfc875ca919921e8f63a6fca648561b.png)
________ .
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/83cf38189d5cbf627d2b82ac0eb76006.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b13a6e1d671215fc96e4bee3541d1096.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b79f232288a6d4b336e06153d81c41fe.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/274a9dc37509f01c2606fb3086a46f4f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/fbfc875ca919921e8f63a6fca648561b.png)
您最近一年使用:0次
2023-05-06更新
|
796次组卷
|
5卷引用:贵州省贵阳市2023届高三适应性考试(二)数学(理)试题
6 . 已知数列
是等比数列且各项均为正数,
,
,数列
的前n项积为
,则
的最大值为________ .
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/83cf38189d5cbf627d2b82ac0eb76006.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/54b71ef6cb9c5d494692d40a9ef279f0.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/140e91cb20ed08b9661d8de0b1ee7c07.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/83cf38189d5cbf627d2b82ac0eb76006.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f1ae9a3b0b7aeb1545b65d91aa371b3c.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f1ae9a3b0b7aeb1545b65d91aa371b3c.png)
您最近一年使用:0次
2022-08-22更新
|
398次组卷
|
3卷引用:贵州省贵阳市2023届高三上学期8月摸底考试数学(文)试题
名校
7 . 已知
,
,
,…,
为抛物线
:
上的点,
为抛物线的焦点.在等比数列
中,
,
,
,…,
.则
的横坐标为__________ .
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/36f18f1cec532d6835b69b99704df0d7.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/14f50e755474f078fc2f3cbc49be2927.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/04b56e44e4f0424a2b7a45567120a2e4.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d3cfeacc29e6a61c5b3b4e439c0a91df.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c5db41a1f31d6baee7c69990811edb9f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/9fc58c62444bf42a25289c45425a00f2.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a0ed1ec316bc54c37c4286c208f55667.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/83cf38189d5cbf627d2b82ac0eb76006.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/81f07676fbd0de82f4e3c2cfbb34e38e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/041586d760875546ddf3d706cc418a1a.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/3a57417071dc5bd4d2c53eefebaad735.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/56f3337b82f8cf365a8f1ac4e495382b.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/cd23f3dd69b74faf3894ae4906491e72.png)
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2022-03-16更新
|
336次组卷
|
4卷引用:贵州师范大学附属中学2021-2022学年高二4月月考数学(理)试题
贵州师范大学附属中学2021-2022学年高二4月月考数学(理)试题河北省沧州市任丘第一中学2021-2022学年高二上学期期末数学试题河北省沧州市2021-2022学年高二上学期期末数学试题(已下线)高二数学下学期期末全真模拟卷(1)(考试范围:高中全部内容)-2021-2022学年高二数学下学期考试满分全攻略(人教A版2019选修第二册+第三册)
名校
8 . 在等比数列
中,
,
,
成等差数列,则![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5a189adc2ec577071220e22261b3b053.png)
_______ .
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/83cf38189d5cbf627d2b82ac0eb76006.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7755b0ec8df40da1e10c3567e441be7f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4f789df5ce1ec7114490c18921462a80.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e86e2e42b4aa93db9241103e7f61766c.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5a189adc2ec577071220e22261b3b053.png)
您最近一年使用:0次
2021-09-13更新
|
504次组卷
|
3卷引用:贵州省六盘水红桥学校2021-2022学年高二上学期第一次月考数学试题
贵州省六盘水红桥学校2021-2022学年高二上学期第一次月考数学试题甘肃省嘉谷关市第一中学2020-2021学年高三上学期三模考试数学(文)试题(已下线)考向27 等差数列及其前n项和(重点)-备战2022年高考数学一轮复习考点微专题(新高考地区专用)
名校
解题方法
9 . 设等比数列
满足:
,
,记
为
中在区间![](https://staticzujuan.xkw.com/quesimg/Upload/formula/fdf8823613e6b620b2891a4c06e4b707.png)
中的项的个数,则数列
的前50项和![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4b024dcba89b9bc12300583e25c1ed90.png)
__________ .
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/63d471926f7b27322d90c82b9ce21d3d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/6243dd554deeb1e4af03b490ee806fae.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/1275f5edaf807edc312c8ab2203aae71.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0f64696f60c533ad95dc7890eb902741.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/63d471926f7b27322d90c82b9ce21d3d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/fdf8823613e6b620b2891a4c06e4b707.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/74d0aea7b7bcbd8bf1ef02c406f601ec.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/9ad351773d8117faa128041a877bf2db.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4b024dcba89b9bc12300583e25c1ed90.png)
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2021-08-27更新
|
333次组卷
|
3卷引用:贵州省六盘水市红桥学校2022届高三上学期适应性月考数学(文)试题
名校
10 . 设等比数列
的公比
,前
项和为
,则
的值为_______ .
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/63d471926f7b27322d90c82b9ce21d3d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/58f45f5bc7c648c0e8924b4fa7b1ad08.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/535cc0ae7869a42fbc58d12c02093f51.png)
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2021-01-09更新
|
297次组卷
|
4卷引用:贵州省铜仁市思南中学2021届高三第十二次考试数学(理)试题
贵州省铜仁市思南中学2021届高三第十二次考试数学(理)试题贵州省铜仁市思南中学2021届高三第十二次考试数学(文)试题江西省南昌市新建一中2021届高三上学期第二次月考数学(文)试题(已下线)第七章 数列专练5—等比数列前n项和-2022届高三数学一轮复习