名校
解题方法
1 . 已知点
都在直线
上,数列
的前
项和为
,已知
,
.
(1)求数列
,
的通项公式;
(2)已知数列
的前
项和为
,若对任意
,
,均有
成立,求实数
的取值范围.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a70c21e742dc2f3ce3eeb8281dd1d945.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0ae1fa1c1e342fc48868d130b0cdb3bd.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/08eb71ecf8d733b6932f4680874dbbf3.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/59dd6c97d2ee3e74ba5730f1cbcc1d43.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c76ff61cb219d9f32fc0ab89edbfaa5b.png)
(1)求数列
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/83cf38189d5cbf627d2b82ac0eb76006.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/034ba25825c13725931c483aa47c9363.png)
(2)已知数列
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b52c9237cb0b4acc568d4afb12997186.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/0704f453b2de48d36911f7db496bbf82.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/cea4ac187cbb465180e89f38250b3970.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/48f458e0e21278d61b3b7185ed55fdaf.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f0a532e15e232cb4b99a8d4d07c89575.png)
您最近一年使用:0次
2020-12-02更新
|
455次组卷
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6卷引用:四川省自贡市富顺第二中学校2021-2022学年高一下学期5月月考数学试题
名校
解题方法
2 . 已知数列
的前
项和为
,且
;数列
为等比数列,且
,
.
(1)求
,
;
(2)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/57c599e7cec6d192fb73218e7882ceca.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/034ba25825c13725931c483aa47c9363.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/73e96fafcc7b7f783d436f853449208d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7c6b7cb760c3bcfec24090e138170e16.png)
(1)求
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/96abfe2da27a63e6affb19a0c80236d9.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/686ece75006ad358f23314dc8a246e11.png)
(2)求数列
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2767882820f4ba0defde0e412adb747f.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
2020-11-29更新
|
612次组卷
|
3卷引用:四川省广安代市中学校2020-2021学年高三下学期第一次月考数学(文)试题
12-13高三上·山东济南·期末
名校
解题方法
3 . 设数列
的前
项和为
,且
; 数列
为等差数列,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/9cb8bf6cf23ae654b32a0348b15ba4c5.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b6a24198bd04c29321ae5dc5a28fe421.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/fb2fb45db89edf57c1e70d6c03640ce5.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/8ecd8203c2dde0baed652dbaeb0e0423.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4bd9aa5ea928f401f91440cfa7870c83.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/dacfb68fbf5550cdb9e377d00be12ed1.png)
(1)求数列
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/9cb8bf6cf23ae654b32a0348b15ba4c5.png)
(2)若
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/16d21118c6b38af37080109c0e17f228.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/57ef6d44448092ebdb9e4a49d866a749.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b6a24198bd04c29321ae5dc5a28fe421.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/22c302a108bd4c05d5b28de5e43a9092.png)
您最近一年使用:0次
2023-07-26更新
|
710次组卷
|
6卷引用:四川省盐亭中学2023届高三上学期(12月)第四次模拟数学(文科)试题
四川省盐亭中学2023届高三上学期(12月)第四次模拟数学(文科)试题(已下线)2012届山东省济南一中高三上学期期末理科数学试卷(已下线)2011-2012学年浙江省衢州一中高二下学期期中文科数学试卷(已下线)2012届河南省卢氏一高高三上学期期末调研考试理科数学试卷(已下线)第05讲 数列求和(九大题型)(讲义)天津市北辰区2020-2021学年高二上学期期末检测数学试卷
名校
解题方法
4 . 已知在数列
中,
为其前
项和,且
,数列
为等比数列,公比
,
,且
,
,
成等差数列.
(1)求
与
的通项公式;
(2)令
,求
的前项和
.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/63d471926f7b27322d90c82b9ce21d3d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/08eb71ecf8d733b6932f4680874dbbf3.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b6a24198bd04c29321ae5dc5a28fe421.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5cce20eb95d5e0c85193f709751c81bf.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5fce83115a50f99e08e9a2db7267aeed.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/eda6dc559d07bc22c9a0ed1e3a6d01d2.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/3aaee408bdec05bbdfcd4b841a331e61.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c7e82778985cd2e9f80ca7b7cabb1a85.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a548938d87c80ac47910607d3857007f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/205655eaf7bad1a63b8b083630bcf8aa.png)
(1)求
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/63d471926f7b27322d90c82b9ce21d3d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5fce83115a50f99e08e9a2db7267aeed.png)
(2)令
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/25c2a5f8ec179b72b201c3c0a670612a.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/38ef4c4439b36c2847b0056a116d56d4.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f1ae9a3b0b7aeb1545b65d91aa371b3c.png)
您最近一年使用:0次
2020-09-06更新
|
376次组卷
|
3卷引用:四川省内江市威远中学校2022-2023学年高三上学期第三次月考数学(文)试题
名校
解题方法
5 . 已知等比数列
的公比
,且
,
的等差中项为5,
.
(1)求数列
的通项公式;
(2)设
,求数列
的前
项和
.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b4be2164a2c67d6163faee87a10942bb.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/6c1ccc6c74b8754e9bcbb3f39a11b6f1.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/18d8e8f821111de8075e5c3dfb22a5d6.png)
(1)求数列
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b4be2164a2c67d6163faee87a10942bb.png)
(2)设
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/add02169a8f58417880df4e302a7c498.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/43b7e7cd571c8cd141cbbfe5d0890bf6.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b6a24198bd04c29321ae5dc5a28fe421.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/08eb71ecf8d733b6932f4680874dbbf3.png)
您最近一年使用:0次
2020-07-25更新
|
407次组卷
|
6卷引用:四川省高县中学校2021-2022学年高一下学期第二次月考数学(文)试题
6 . 已知等比数列
的前
项和为
,且
,
.
(1)求等比数列
的通项公式;
(2)若数列
为递增数列,数列
是等差数列,且
,
;数列
的前
项和为
,求
.
![](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/6f4c2d452851c386cdedf3261d9e9053.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d5b629105f7c8e26bd1ed69e40ed1e88.png)
(1)求等比数列
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/83cf38189d5cbf627d2b82ac0eb76006.png)
(2)若数列
![](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/73e96fafcc7b7f783d436f853449208d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/bd4cf909f2febeea7d169459d0cf0bcf.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/aec4bdc2a6d4fc387dc621f0b5a268c5.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/f1ae9a3b0b7aeb1545b65d91aa371b3c.png)
您最近一年使用:0次
2019-11-06更新
|
83次组卷
|
3卷引用:四川省遂宁市蓬溪绿然国际学校2022-2023学年高三上学期9月月考文科数学试题
2018高三下·全国·专题练习
名校
解题方法
7 . 已知等差数列
满足
,
,公比为正数的等比数列
满足
,
.
(1)求数列
,
的通项公式;
(2)设
,求数列
的前
项和
.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/29518f13a1ebc3fff8181c2d7cfba22f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f883388e60eb4893b32c9cd46d0e6dee.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c1e78b949ff0bbe0afd81d89df57b15e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e2448cf72af76b810310e4cfb9818e2e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5f4a9773040619a4a82f250e33324074.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/6248283c4c9aece472f94d10e9ab78dd.png)
(1)求数列
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/29518f13a1ebc3fff8181c2d7cfba22f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e2448cf72af76b810310e4cfb9818e2e.png)
(2)设
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5763e64567cef4838203b4fd680acda5.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f4a426d8afd49a1ce1e8dddd2ea37498.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b6a24198bd04c29321ae5dc5a28fe421.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/cb26cd1601fe7e76e1e2dc0b4909324a.png)
您最近一年使用:0次
2018-08-01更新
|
4513次组卷
|
13卷引用:四川省德阳市广汉中学、绵竹中学2021-2022学年高一下学期联考理科数学试题
四川省德阳市广汉中学、绵竹中学2021-2022学年高一下学期联考理科数学试题辽宁省沈阳市铁路实验中学2019-2020学年高二上学期10月月考数学试题(已下线)【南昌新东方】江西省南昌十九中2020-2021学年高三上学期10月第一次月考数学(理)试题(已下线)2018年4月2018届高三第二次全国大联考(新课标Ⅰ卷)-文科数学【全国百强校】河南省南阳市第一中学2018届高三第十九次考试数学(理)试题(已下线)2018年9月30日《每日一题》一轮复习(理)-每周一测(已下线)2018年9月30日《每日一题》一轮复习(文)-每周一测(已下线)2018年10月7日 《每日一题》一轮复习【文】- 每周一测吉林省五地六市联盟2018-2019学年高一下学期期末考试数学试题(已下线)2019年9月29日 《每日一题》2020年高考文数一轮复习-每周一测(已下线)2019年9月29日 《每日一题》2020年高考理数一轮复习-每周一测吉林省长春市“BEST合作体”2018-2019学年高一下学期期末数学试题湖南师大附中2019-2020学年高二上学期入学考试数学试题
8 . 已知数列
满足
,
,令
.
(Ⅰ)求证:
是等比数列;
(Ⅱ)记数列
的前n项和为
,求
;
(Ⅲ)求证:
.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b4be2164a2c67d6163faee87a10942bb.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/039e4fe671d61e59b96ee525c9df43e8.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/cefac0821e8fa39cad900df7ebb6e1c7.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c07cefac60bb3fcde0bded804501c90b.png)
(Ⅰ)求证:
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/43b7e7cd571c8cd141cbbfe5d0890bf6.png)
(Ⅱ)记数列
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/819bc4680859f96a1bd028a56db81211.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f1ae9a3b0b7aeb1545b65d91aa371b3c.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f1ae9a3b0b7aeb1545b65d91aa371b3c.png)
(Ⅲ)求证:
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f7909acec5d557a91bb5b4e409df8be8.png)
您最近一年使用:0次
2017-02-17更新
|
3582次组卷
|
5卷引用:四川省内江市威远中学校2021-2022学年高一下学期第二次阶段性测试数学(理)试题
9 . 已知数列{an}的前n项和
,且Sn的最大值为8.
(1)确定常数k,求an;
(2)求数列
的前n项和Tn.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/971d13811a20d161a9704f5602b8837a.png)
(1)确定常数k,求an;
(2)求数列
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d473a39808b36ce12e57dcfcb4649bf5.png)
您最近一年使用:0次
2016-12-01更新
|
4526次组卷
|
10卷引用:四川省凉山州宁南中学2021-2022学年高一下学期第二次月考数学(理)试题
四川省凉山州宁南中学2021-2022学年高一下学期第二次月考数学(理)试题贵州省遵义市航天高级中学2020-2021学年高二上学期第一次月考数学试题(已下线)考向29 数列求和(重点)(已下线)专题6-2 数列求和归类-2吉林省洮南市第一中学2020-2021学年高三上学期第三次月考数学试题(理)陕西省咸阳市高新一中2023-2024学年高二上学期第三次质量检测数学试卷2012年全国普通高等学校招生统一考试理科数学(江西卷)(已下线)专题32 数列大题解题模板-2021年高考一轮数学(文)单元复习一遍过(已下线)专题32 数列大题解题模板-2021年高考一轮数学单元复习一遍过(新高考地区专用)(已下线)考点21 数列的概念与简单表示法-备战2022年高考数学(理)一轮复习考点帮