1 . 正项等比数列
,
,则
( )
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/83cf38189d5cbf627d2b82ac0eb76006.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/02c656ffb75363e18d211963695739c5.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/42e4487468ab2823d6dbf7f0ebd2eb38.png)
A.8 | B.4 | C.2 | D.1 |
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2 . 已知
为等比数列,
,
,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/366dfedff1a1a96ec27650375b680059.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/41f7a93abb889ddc4fb67a687efeb0c3.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/fbfc875ca919921e8f63a6fca648561b.png)
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3 . 若等比数列
各项均为正数,且
,则
( )
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/83cf38189d5cbf627d2b82ac0eb76006.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/40ed131350af1c6506327df7bd44f007.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/fbfc875ca919921e8f63a6fca648561b.png)
A.![]() | B.1 | C.![]() | D.2 |
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4 . 正项等比数列
满足
,
,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/b065334d8f60c49f4bd3d9f1373fe4cd.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f6278d3cc0086c7aab6ac20712c7d0bd.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/047dbd9ff686703cad03aa383e5fec21.png)
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5 . 已知数列
满足
,且
成等比数列,
(1)求
的通项公式;
(2)设数列
的前
项和为
,求
的最小值及此时
的值.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/63d471926f7b27322d90c82b9ce21d3d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ab8715c6994443bac3ad123b4f405d0c.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/127b4bb2cecae98450c06a47b076c693.png)
(1)求
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/63d471926f7b27322d90c82b9ce21d3d.png)
(2)设数列
![](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/08eb71ecf8d733b6932f4680874dbbf3.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b6a24198bd04c29321ae5dc5a28fe421.png)
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2023-12-15更新
|
2911次组卷
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8卷引用:云南省下关一中教育集团2023-2024学年高二上学期12月段考(二)数学试卷
云南省下关一中教育集团2023-2024学年高二上学期12月段考(二)数学试卷北京市一零一中学2023-2024学年高二上学期期末考试数学试卷河南省三门峡市2023-2024学年高二上学期期末数学试题(已下线)第四章 数列章末综合达标卷-2023-2024学年新高二数学同步精讲精练宝典(人教A版2019选修第二、三册)四川省成都市新津区成外学校2023-2024学年高二下学期3月月考数学试题辽宁省沈阳市辽宁实验中学北校2023-2024学年高二下学期4月阶段测试数学试题广东省惠州市三校2023-2024学年高二下学期4月联考数学试题江西省宜春市丰城中学2023-2024学年高二下学期4月期中考试数学试题
名校
6 . 等差数列
的首项为5,公差不等于零.若
,
,
成等比数列,则
( )
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/83cf38189d5cbf627d2b82ac0eb76006.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/3e88093a749c0d46e0ee931ecfaff925.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/daf464629fa321a6ff7401ab79f07083.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f65fc200f10b97588a0c9896277c9c64.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/56c6ce06c1cd6542d0bb2bedaf66b8cf.png)
A.![]() | B.![]() | C.![]() | D.-2014 |
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2023-11-01更新
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10卷引用:2020届安徽省江淮十校高三下学期5月第三次联考理科数学试题
2020届安徽省江淮十校高三下学期5月第三次联考理科数学试题甘肃省武威第六中学2020-2021学年高三上学期第二次过关考试数学(文)试题第一章 数列 B卷 能力提升广东省珠海市华中师范大学珠海附属中学2024届高三上学期9月月考数学试题(已下线)模块一 专题6 数列的通项公式与求和问题(已下线)专题24 等比数列的通项公式及其应用、等比中项及应用(期末选择题24)-2023-2024学年高二数学上学期期末题型秒杀技巧及专项练习(人教A版2019)(已下线)4.2 等比数列(第1课时)(十大题型)(分层练习)-2023-2024学年高二数学同步精品课堂(沪教版2020选择性必修第一册)(已下线)专题04 等比数列(十六大题型+过关检测专训)(1)(已下线)模块一专题3 数列的实际应用和综合问题【讲】高二下人教B版(已下线)模块一 专题4 数列的实际应用和综合问题【讲】高二下北师大版
23-24高二上·全国·课后作业
解题方法
7 . 已知数列
为等比数列,k是小于n的正整数,
是
和
的等比中项吗?
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/83cf38189d5cbf627d2b82ac0eb76006.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/96abfe2da27a63e6affb19a0c80236d9.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/3ab5b3fb212ed2113ff5410a40068cbe.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4624141790a9fddfb8be85592ccf3e1f.png)
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23-24高二上·全国·课后作业
8 . 求出下列等比数列中的未知项:
(1)3,a,27;
(2)
,a,b,
.
(1)3,a,27;
(2)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/3389f53711264b0acba3ba6019f8b908.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/8b8d1ca7682da10dc7f36e858593d51f.png)
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22-23高二下·全国·课后作业
9 . 已知{an}为等比数列.
(1)等比数列{an}满足
,求
;
(2)若
,
,求
;
(3)若
,
,求
的值.
(1)等比数列{an}满足
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f30150307a0e0a89f7772a3f44de8d65.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2ba80bbcfba311b30e935d533cd4acdf.png)
(2)若
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e9645bd4d2002993b90ec6d48f9c04f7.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/92dc56354e3c527de203edbc65b5a894.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2483e5f5db5093a12d65e82e0b785f30.png)
(3)若
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e9645bd4d2002993b90ec6d48f9c04f7.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/3fd120107c9cb358dc00bdd212668e39.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/1dd64b1e54ee55598173becb0fa23322.png)
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10 . 若数列
是等比数列,且
,则![](https://staticzujuan.xkw.com/quesimg/Upload/formula/80c37658b86d25b54b4e51943203f43a.png)
__________ .
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/83cf38189d5cbf627d2b82ac0eb76006.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a160fe82dc536ee36b8757d9e3e48784.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/80c37658b86d25b54b4e51943203f43a.png)
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2023-03-11更新
|
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9卷引用:四川省成都市玉林中学2022-2023学年高三下学期3月月考文科数学试题