1 . 设
是等差数列,
是等比数列,且
.
(1)求
与
的通项公式;
(2)设
的前n项和为
,求证:
;
(3)求
.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/83cf38189d5cbf627d2b82ac0eb76006.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/034ba25825c13725931c483aa47c9363.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/6f6eba282321f5d17e3de9b6544e9f6f.png)
(1)求
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/83cf38189d5cbf627d2b82ac0eb76006.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/034ba25825c13725931c483aa47c9363.png)
(2)设
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/83cf38189d5cbf627d2b82ac0eb76006.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/08eb71ecf8d733b6932f4680874dbbf3.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/702b31070b4001b47426d73831e585b5.png)
(3)求
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ae8c253e4b6ad77d04aa34c580285c06.png)
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2022-07-25更新
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14153次组卷
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21卷引用:天津市静文高级中学2022-2023学年高三上学期期末数学试题
天津市静文高级中学2022-2023学年高三上学期期末数学试题2022年新高考天津数学高考真题(已下线)2022年高考天津数学高考真题变式题10-12题(已下线)第02讲 等差数列及前n项和(练)(已下线)第04讲 数列求和(练)(已下线)第03讲 等比数列及前n项和(练)(已下线)2022年高考天津数学高考真题变式题16-18题(已下线)专题5 2022年高考“数列”专题命题分析(已下线)专题04 数列的通项、求和及综合应用(精讲精练)-1黑龙江省实验中学2022-2023学年高二上学期期中数学试题(已下线)专题五 数列-2(已下线)重组卷03(已下线)重组卷05(已下线)专题6-2 数列大题综合18种题型(讲+练)-1(已下线)专题04 数列(6)(已下线)数列 求和(已下线)重难点03:数列近3年高考真题赏析-2023-2024学年高二数学同步精品课堂(北师大版2019选择性必修第二册)(已下线)专题6.2 等比数列及其前n项和【十大题型】(已下线)重难点10 数列的通项、求和及综合应用【九大题型】专题06数列专题11数列
2 . 已知数列
满足:
,正项数列
满足:
,且
,
,
.
(1)求
,
的通项公式;
(2)已知
,求:
;
(3)求证:
.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/83cf38189d5cbf627d2b82ac0eb76006.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/9613f8aa0a503b83e25141127a19efe0.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/034ba25825c13725931c483aa47c9363.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e7bdaf9fa374c130456f462ee49c4ee1.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5ffaa768f1232ff14bcd2cdd438ce53a.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/6e1273751a0b5a984cf01c2d0e00e474.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/bb27d03d22ec55dbf33d6d9d3c44854f.png)
(1)求
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/83cf38189d5cbf627d2b82ac0eb76006.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/034ba25825c13725931c483aa47c9363.png)
(2)已知
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b97aef7af01785f58caee047c55187e9.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/11ca23ce02583bd8fe3b9d06d99e0e3c.png)
(3)求证:
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f5fca0c9355067a7b3e8d60bf0573e40.png)
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8卷引用:天津市滨海新区塘沽第一中学2024届高三毕业班八校联考数学模拟试题
天津市滨海新区塘沽第一中学2024届高三毕业班八校联考数学模拟试题天津市十二区重点学校2023届高三下学期毕业班联考(二)数学试题天津市宁河区芦台第一中学2022-2023学年高二下学期5月学情调研数学试题(已下线)专题15 数列不等式的证明 微点6 数列不等式的证明综合训练(已下线)2023年天津高考数学真题变式题16-20福建省福州格致中学2024届高三上学期10月质检数学试题(已下线)数列与不等式专题04数列求和(裂项求和)
3 . 已知数列
是公比
的等比数列,前三项和为13,且
,
,
恰好分别是等差数列
的第一项,第三项,第五项.
(1)求
和
的通项公式;
(2)已知
,数列
满足
,求数列
的前2n项和
;
(3)设
,求数列
的前n项和
.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/83cf38189d5cbf627d2b82ac0eb76006.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/eda6dc559d07bc22c9a0ed1e3a6d01d2.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e72adb45c60c2f63b46e65ff787302bf.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/58b3175ab6772cd611f9c42771a9467d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/6c1ccc6c74b8754e9bcbb3f39a11b6f1.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/034ba25825c13725931c483aa47c9363.png)
(1)求
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/83cf38189d5cbf627d2b82ac0eb76006.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/034ba25825c13725931c483aa47c9363.png)
(2)已知
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/cad52924df9291d5d191d18e09374ee1.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/57ef6d44448092ebdb9e4a49d866a749.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e90c4e8734cf9695378e52862a603900.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/57ef6d44448092ebdb9e4a49d866a749.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/3b9a0d7150fb24be3e28ef7f0e18be93.png)
(3)设
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c910871ff511e1ea952ad66eff1016db.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b783cf91e34e692ce8e171f0965cb53f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f1ae9a3b0b7aeb1545b65d91aa371b3c.png)
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12卷引用:天津市南开区翔宇学校2022-2023学年高三上学期期末数学试题
天津市南开区翔宇学校2022-2023学年高三上学期期末数学试题天津市滨海新区塘沽第一中学2023-2024学年高二上学期期末数学练习9天津市南开区2022届高三下学期三模数学试题(已下线)专题27 数列求和-2天津市第七中学2022-2023学年高三上学期12月月考数学试题天津市南开大学附属中学2023届高三下学期2月统练(一)数学试题(已下线)天津市南开中学2023届高三下学期第五次月考数学试题(已下线)第7讲 数列求和9种常见题型总结 (2)(已下线)专题6-2 数列大题综合18种题型(讲+练)-1(已下线)模块六 专题6 全真拔高模拟2(已下线)数列 求和专题04数列求和(裂项求和)
名校
解题方法
4 . 已知数列
是各项为正数的等比数列,公比为q,在
之间插入1个数,使这3个数成等差数列,记公差为
,在
之间插入2个数,使这4个数成等差数列,公差为
,在
之间插入n个数,使这
个数成等差数列,公差为
,则( )
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/83cf38189d5cbf627d2b82ac0eb76006.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c0158862238e250d2a2598b7d4ecd148.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5edf900c810371fb21297c15f86d8743.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/fe61d313eeca8ba47478a9de40540db8.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/8b3ca6aa53687236f02b85c9a25b382c.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d514eb8dff80d4dc3f39de516b63b846.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/3468a665ac713ab7b400c672f19650a1.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/82e260b088f071983f254ce8f5163fcd.png)
A.当![]() ![]() | B.当![]() ![]() |
C.当![]() ![]() | D.当![]() ![]() |
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14卷引用:浙江省金华十校2022-2023学年高二上学期期末数学试题
浙江省金华十校2022-2023学年高二上学期期末数学试题河南省新乡市第一中学2022-2023学年高二下学期3月月考数学试题上海市崇明区2023届高三4月二模数学试题(已下线)数学(江苏卷)(已下线)专题05 数列(已下线)专题06 数列及其应用(已下线)专题11 押全国卷(理科)第4、8题 数列安徽省蚌埠市第二中学2023-2024学年高二上学期12月月巩固检测数学试题(已下线)专题10 等比数列单调性(已下线)第4章 数列 单元综合检测(重点)-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)第4章 数列 (单元重点综合测试)-2023-2024学年高二数学单元速记·巧练(沪教版2020选择性必修第一册)单元测试B卷——第四章 数列(已下线)【练】 专题7 等比数列与等差数列的综合问题(已下线)【练】专题1 数列的单调性问题
名校
解题方法
5 . 已知等差数列
中,前
项和为
,
,
为等比数列且各项均为正数,
,且满足
,
.
(1)求
与
;
(2)设
,
,求
的前
项和
.
![](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/b065334d8f60c49f4bd3d9f1373fe4cd.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5fce83115a50f99e08e9a2db7267aeed.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/59dd6c97d2ee3e74ba5730f1cbcc1d43.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d539f3a8eed10ffcc7aba172c9f8ee10.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0d5252b6b2b8d408dcae481a53412aea.png)
(1)求
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/96abfe2da27a63e6affb19a0c80236d9.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/686ece75006ad358f23314dc8a246e11.png)
(2)设
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/82c28a6d2b30be983b7a59e931074e66.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/62ec1ead0d46959df22ced95fadb1d4f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/82e260b088f071983f254ce8f5163fcd.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e2d51f9147b8265c0276c1f2c2659197.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/fbd85b79372dc6e596d465f738c3c300.png)
您最近一年使用:0次
2022-01-21更新
|
2970次组卷
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7卷引用:天津市武清区杨村一中2020-2021学年高二下学期期末数学试题
天津市武清区杨村一中2020-2021学年高二下学期期末数学试题湖南省省级示范名校联盟2022届高三下学期3月第一次学科综合评估检测数学试题(已下线)第03讲 等比数列(核心考点讲与练)-2021-2022学年高二数学考试满分全攻略(人教A版2019选修第二册+第三册)(已下线)专题27 数列求和-2(已下线)第7讲 数列求和9种常见题型总结 (2)(已下线)拓展二:数列求和方法归纳(3)(已下线)专题04 数列(6)
6 . 已知
是首项为1的等比数列,
是首项为2的等差数列,
且
.
(1)求
和
的通项公式;
(2)将
和
中的所有项按从小到大的顺序排列组成新数列
,求数列
的前50项和
;
(3)设数列
的通项公式为
,
,记
的前
项和为
,若
对任意的
都成立,求正数
的取值范围.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/83cf38189d5cbf627d2b82ac0eb76006.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/034ba25825c13725931c483aa47c9363.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a4ccd62deec96fa702562bb4fbb797ab.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b0634b9b4a6716bb7dae3aff7d6d2630.png)
(1)求
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/83cf38189d5cbf627d2b82ac0eb76006.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/034ba25825c13725931c483aa47c9363.png)
(2)将
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/83cf38189d5cbf627d2b82ac0eb76006.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/034ba25825c13725931c483aa47c9363.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/57ef6d44448092ebdb9e4a49d866a749.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/57ef6d44448092ebdb9e4a49d866a749.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a34a901aa78366ac960f5f4e7f1fcbac.png)
(3)设数列
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b783cf91e34e692ce8e171f0965cb53f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d34ca593d2c68fbe9bdcf0ffd2a7f810.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/48f093c61867ee4ce75f951d46b9b123.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b783cf91e34e692ce8e171f0965cb53f.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/04f8bc7db6652ad666daf9a97fa15f04.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/48f093c61867ee4ce75f951d46b9b123.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/36a1b09c653185842513e24ebba60bb3.png)
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2024-01-13更新
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1448次组卷
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3卷引用:上海市行知中学2023-2024学年高二上学期期末数学试卷
7 . 已知等差数列
与等比数列
满足
,
,
,且
既是
和
的等差中项,又是其等比中项.
(1)求数列
和
的通项公式;
(2)记
,其中
,求数列
的前
项和
;
(3)记
,其前n项和为
,若
对
恒成立,求
的最小值.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/83cf38189d5cbf627d2b82ac0eb76006.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/034ba25825c13725931c483aa47c9363.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b065334d8f60c49f4bd3d9f1373fe4cd.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a8a0eecb5b800fce9ae10aed86ffee62.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/eab7d59ce066c8f0b346719003f8e28f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/3e88093a749c0d46e0ee931ecfaff925.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ea74a5cf39bd1149aed1ce6c8ba0c895.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/161a7b35d1812e6745ae7f7c540cf87a.png)
(1)求数列
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/83cf38189d5cbf627d2b82ac0eb76006.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/034ba25825c13725931c483aa47c9363.png)
(2)记
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/75694e17b22555bcc47af9f0aa1552e8.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/9b08c58baacec3cd0c0a06e267fa9ec5.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/57ef6d44448092ebdb9e4a49d866a749.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e2d51f9147b8265c0276c1f2c2659197.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/3b9a0d7150fb24be3e28ef7f0e18be93.png)
(3)记
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/1a3d29e6aa90956ac1e714c66d42db95.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f1ae9a3b0b7aeb1545b65d91aa371b3c.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/dc6398bc540c39280c5947577c69be91.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e97769855336d73371930df1f187875e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/06430886275f5ad62bcda62fce691e99.png)
您最近一年使用:0次
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|
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3卷引用:江西省新余市2023-2024学年高三上学期期末质量检测数学试卷
江西省新余市2023-2024学年高三上学期期末质量检测数学试卷(已下线)期末测试卷01(测试范围:第1-4章数列)-2023-2024学年高二数学《重难点题型·高分突破》(人教A版2019选择性必修第二册)天津市第四十七中学2023-2024学年高三上学期第一次阶段性检测数学试题
8 . 已知数列
是公差为1的等差数列,且
,数列
是等比数列,且
.
(1)求
和
的通项公式;
(2)令
,求证:
;
(3)记
其中
,求数列
的前
项和
.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/83cf38189d5cbf627d2b82ac0eb76006.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ecd2edf101d891d5471a0848ebbcf65f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/034ba25825c13725931c483aa47c9363.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/1cc3dbc001729162ac54c0134f000a3c.png)
(1)求
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/83cf38189d5cbf627d2b82ac0eb76006.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/034ba25825c13725931c483aa47c9363.png)
(2)令
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/9fe18b02a93934205223805180ddad10.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/965a6530b8a92f753cd6efdfd8be392f.png)
(3)记
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e71bd169e5b0a0b445572b7a65c28106.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/cad52924df9291d5d191d18e09374ee1.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/57ef6d44448092ebdb9e4a49d866a749.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e2d51f9147b8265c0276c1f2c2659197.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/3b9a0d7150fb24be3e28ef7f0e18be93.png)
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9 . 已知
是等差数列
的前
项和,满足
,设
,数列
的前
项和为
,则下列结论中正确的是( )
![](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/3e51bd048ce07c3d52e414ba46be23a5.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/230ae9538a1b0ec62c3491cbce25df8f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/8af0d8d4f6e5b80bcb510173c5802358.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b6a24198bd04c29321ae5dc5a28fe421.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f1ae9a3b0b7aeb1545b65d91aa371b3c.png)
A.![]() | B.使得![]() ![]() |
C.![]() | D.当![]() ![]() |
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2023-11-29更新
|
994次组卷
|
4卷引用:模块三 专题3 小题满分挑战练(2) 期末终极研习室(高二人教A版)
(已下线)模块三 专题3 小题满分挑战练(2) 期末终极研习室(高二人教A版)(已下线)第06讲:数列求和 (必刷5大考题+5大题型)-2023-2024学年高二数学上学期《考点·题型·难点》期末高效复习(人教A版2019)山西省朔州市怀仁市2023-2024学年高二上学期第二次教学质量调研数学试题中学生标准学术能力诊断性测试(THUSSAT)2023-2024学年高三上学期11月测试数学试卷
解题方法
10 . 记等差数列
的n和为
,数列
的前k 项和为
,则( )
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/83cf38189d5cbf627d2b82ac0eb76006.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/08eb71ecf8d733b6932f4680874dbbf3.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4dea1dd4ffcb4cf0697ca43079f6a1f2.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/3a996c4e29bcc381353e072eb04c11b0.png)
A.若![]() ![]() ![]() |
B.若当且仅当![]() ![]() ![]() |
C.若![]() ![]() ![]() ![]() |
D.若![]() ![]() ![]() ![]() ![]() |
您最近一年使用:0次