解题方法
1 . 对于集合
,
,
,
,定义
.
集合
中的元素个数记为
,当
,称集合
具有性质
.
(1)已知集合
,
,写出
,
的值,并判断集合
是否具有性质
;
(2)设集合
具有性质
,判断集合
中的三个元素是否能组成等差数列,请说明理由;
(3)若数列
是以
为首项,2为公比的等比数列. 数列
中的前100项:
组成的集合
记作
,将集合
中的所有元素
从小到大排序,即
满足
,求
.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/cb9e56ab45ddf991ae24983027e04b08.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/db7b630f6878c1d352e8af01c665717e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/cea4ac187cbb465180e89f38250b3970.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a949b947e9961d4d68bfeb4e24ef40f9.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ac97ce5d3bc6190405872a2bcdaba4a7.png)
集合
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5963abe8f421bd99a2aaa94831a951e9.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/cc8279d9dd0b7750953cb9e2098b3b90.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e0ed1a4ea6b0850f07ab08a9ae4c2586.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5963abe8f421bd99a2aaa94831a951e9.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4b454cdb97c408300b50d945f002c2cb.png)
(1)已知集合
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d72bc3ebd480e761d156ae995abc1153.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/30d93a1826cda380160e84627168bf09.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/87b6ca4579d3b21f827a20b3e7b7ad58.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c80d440b9478c09a6870403a8bd5cf38.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5963abe8f421bd99a2aaa94831a951e9.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4b454cdb97c408300b50d945f002c2cb.png)
(2)设集合
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/73fb82b3b92166ede940c6acb8bf9df6.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4b454cdb97c408300b50d945f002c2cb.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c5db41a1f31d6baee7c69990811edb9f.png)
(3)若数列
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b783cf91e34e692ce8e171f0965cb53f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/3f1dd362f843e640ce551ad1787c9873.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b783cf91e34e692ce8e171f0965cb53f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4e1b119f2905cb66fc951f46bf80bc15.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a85586a08c92a3fd7336a475f374f90e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/8455657dde27aabe6adb7b188e031c11.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7c937a771a3a0739f90dbfb56075a092.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/9e3dc3c41d594973b0075305169c040a.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/00229178e9719ffa67bea1e9d824209a.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/9f07a1f7649dadf647a1cead8b1310b4.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c306d892bed93f80bc24c6cace5ddf1e.png)
您最近一年使用:0次
名校
2 . 设等比数列
的公比为
,其前
项之积为
,并且满足条件:
,
,
,给出下列结论:①
;②
;③
是数列
中的最大项;④使
成立的最大自然数等于4039;其中正确结论的序号为( )
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/63d471926f7b27322d90c82b9ce21d3d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/9aa8a716a31b0f51b70fdf9bdb257909.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/8141d87fb02b08c88b0c9f27f839a7d9.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/105b7c252d779a588da78a0ca85033f1.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/440a4d70a2a8ca0a2bf1c921f5cb746b.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/9ca664b1e82da6f50064a76fe118aa80.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/59eb9fe0e83d23d85c9c0b44b442f785.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/1adb2d553c2fa56337284d5c62adccba.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5eded65284816fdf6bf335b0c2a78e6a.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c6ae93e401b499b0e39f251279b5663c.png)
A.①② | B.①③ | C.①③④ | D.①②③④ |
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15卷引用:2020届上海市青浦区高三一模(期末)数学试题
2020届上海市青浦区高三一模(期末)数学试题(已下线)第22练 等比数列-2021年高考数学(文)一轮复习小题必刷(已下线)第23练 等比数列-2021年高考数学(理)一轮复习小题必刷(已下线)秘籍07 数列-备战2022年高考数学抢分秘籍(新高考专用)(已下线)专题25 等比数列及其前n项和-3(已下线)专题8 等比数列的单调性 微点2 等比数列单调性综合训练(已下线)第03讲 等比数列及其前n项和(九大题型)(讲义)-3(已下线)专题5-1 等差等比性质综合-1(已下线)专题6.2 等比数列及其前n项和【十大题型】上海市格致中学2020-2021学年高二上学期期中数学试题上海市上海交通大学附属中学2019-2020学年高一下学期期中数学试题北京市第二中学2021-2022学年高二6月阶段落实测试数学试题(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)(2)(已下线)专题4.3 等比数列(5个考点八大题型)(2)
名校
3 . 等比数列
的公比
,
,则使
成立的正整数
的最大值为______
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/83cf38189d5cbf627d2b82ac0eb76006.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/9ca664b1e82da6f50064a76fe118aa80.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7714ac70e3e671de8607328d52588c75.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5ca9fab443c43aec07dfca6751a02872.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b6a24198bd04c29321ae5dc5a28fe421.png)
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4卷引用:湖南师范大学附属中学2021-2022学年高三上学期第二次月考数学试题
湖南师范大学附属中学2021-2022学年高三上学期第二次月考数学试题湖南师大附中2022届高三上学期月考数学试题(二)(已下线)专题8 等比数列的单调性 微点1 判断等比数列单调性的方法上海市晋元高级中学2015-2016学年高二上学期期中数学试题
4 . (1)已知数列
为等差数列,其前n项和为
.若
,试分别比较
与
、
与
的大小关系.
(2)已知数列
为等差数列,
的前n项和为
.证明:若存在正整数k,使
,则
.
(3)在等比数列
中,设
的前n项乘积
,类比(2)的结论,写出一个与
有关的类似的真命题,并证明.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/83cf38189d5cbf627d2b82ac0eb76006.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e6f18f2c2ec67b5e59e4b3d28795d125.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/04b3b63a977f2eb91a87f8eadd3ab078.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/3549a6c9f727de6be285bcaa281f2f48.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/83c2d5971afbff8eca1b9aff5f76f710.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/530f5b63e797195906285c0c03eb9276.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/05cde56d89850b5e4ba6ee17240b4cd8.png)
(2)已知数列
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/83cf38189d5cbf627d2b82ac0eb76006.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/83cf38189d5cbf627d2b82ac0eb76006.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e6f18f2c2ec67b5e59e4b3d28795d125.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/8d8e90d52301bbdbe6162603db405020.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/aea732c79fa31c37f67e7446a66ec476.png)
(3)在等比数列
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/034ba25825c13725931c483aa47c9363.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/034ba25825c13725931c483aa47c9363.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/fdfa10960d976a70c8b6625cc6451e8f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2b5056d12487759b2fe1944612639d39.png)
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5 . 设数列
的前
项和为
,已知
,![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b9f43bd2958ff6ac134b06501e5743f4.png)
(1)设
证明数列
是等比数列;
(2)求数列
的通项公式;
(3)若对于一切
,都是
恒成立,求
的取值范围.
![](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/e7fab51121848ce166035ceab6f4e00b.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b9f43bd2958ff6ac134b06501e5743f4.png)
(1)设
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/35334108a992e39680b5aa673d4ccafd.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5fce83115a50f99e08e9a2db7267aeed.png)
(2)求数列
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/63d471926f7b27322d90c82b9ce21d3d.png)
(3)若对于一切
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/cea4ac187cbb465180e89f38250b3970.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/bbb71aacea5a3e019c3d081428834f85.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0a6936d370d6a238a608ca56f87198de.png)
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6 . 已知公差
的等差数列
的前
项和为
,且满足
,
.
(1)求数列
的通项公式;
(2)求证:
是数列
中的项;
(3)若正整数
满足如下条件:存在正整数
,使得数列
,
,
为递增的等比数列,求
的值所构成的集合.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c4ce64685821c3e55c07f151996ca8c3.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/e1d61fe1a71a6ad5db1172765f51db0d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c80735b4ccb365831ac19a2ad06d3973.png)
(1)求数列
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/83cf38189d5cbf627d2b82ac0eb76006.png)
(2)求证:
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f430a3281e43531c4bf554599313eae8.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/83cf38189d5cbf627d2b82ac0eb76006.png)
(3)若正整数
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/294f5ba74cdf695fc9a8a8e52f421328.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f0a532e15e232cb4b99a8d4d07c89575.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/3e88093a749c0d46e0ee931ecfaff925.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/681ae1522a36768618f7ddaf74abbb7e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5f255d0395fba51ca2d44293cca42e0a.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/294f5ba74cdf695fc9a8a8e52f421328.png)
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7 . 设公比大于1的等比数列
的前
项和为
,且
,
,数列
的前
项和为
,且
,
.
(1)求数列
及
的通项公式;
(2)设
,定义
,若数列
是单调递减数列,求实数
的取值范围.
![](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/b065334d8f60c49f4bd3d9f1373fe4cd.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/45a98c809863fe73e70ecdcd4234a680.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/f1ae9a3b0b7aeb1545b65d91aa371b3c.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5fd705b936f0417aa140f274e195f56b.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/62cb36d712dfebf4308a074a9f73d12f.png)
(1)求数列
![](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/ac38c573c8862a8ce491831c9723a772.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0c613e957fb21dd92288562f5900d413.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/57ef6d44448092ebdb9e4a49d866a749.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/df64046e91b047037f19e4032e3b6de3.png)
您最近一年使用:0次
2019-06-25更新
|
626次组卷
|
4卷引用:2019年湖南省怀化市第三次模拟数学(理)试题
2019年湖南省怀化市第三次模拟数学(理)试题(已下线)专题8 等比数列的单调性 微点2 等比数列单调性综合训练2020届湖北省恩施土家族苗族自治州高级中学高三第五次质量检测数学(理)试题(已下线)强化卷08(3月)-冲刺2020高考数学之必拿分题目强化卷(山东专版)
8 . 已知数列{an}的前n项和为Sn,且满足Sn+n=2an(n∈N*).
(1)证明:数列{an+1}为等比数列,并求数列{an}的通项公式;
(2)若bn=nan+n,数列{bn}的前n项和为Tn,求满足不等式
的n的最小值.
(1)证明:数列{an+1}为等比数列,并求数列{an}的通项公式;
(2)若bn=nan+n,数列{bn}的前n项和为Tn,求满足不等式
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/15a0a284601813fdc72580999ff8928b.png)
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2019-04-23更新
|
1180次组卷
|
3卷引用:专题8 等比数列的单调性 微点2 等比数列单调性综合训练
(已下线)专题8 等比数列的单调性 微点2 等比数列单调性综合训练山东省聊城市东昌府区聊城颐中外国语学校2023-2024学年高三上学期期中数学试题【全国百强校】安徽省淮北市第一中学2018-2019学年高二上学期第四次月考数学试题
名校
解题方法
9 . 已知数列
的通项公式为
,数列
的通项公式为
,设
,若在数列
中,
,则实数
的取值范围是_________ .
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/83cf38189d5cbf627d2b82ac0eb76006.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/db3de7a3d94001b74ceef61edf20c121.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/034ba25825c13725931c483aa47c9363.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/56671e906550c69fbf1347a26bb29695.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ce0786af86482b3d732cc6f5fd1ae400.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/57ef6d44448092ebdb9e4a49d866a749.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/87d592db42790ad972c06fe9b31007f2.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b1010846eeec6c9da29640f5aa3f8738.png)
您最近一年使用:0次
2019-01-30更新
|
402次组卷
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7卷引用:2015届山西大学附属中学高三上学期期中考试理科数学试卷
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