名校
1 . 数列
中,
,则数列
的极限值为( )
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/63d471926f7b27322d90c82b9ce21d3d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/17cd8b63f15a567597369e3612b6af6e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/63d471926f7b27322d90c82b9ce21d3d.png)
A.0 | B.1 | C.0或1 | D.不存在 |
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2 . 已知无穷等比数列
的公比为
,前
项和为
,且
,若对于任意
,
恒成立,则公比
的取值范围是________
![](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/08eb71ecf8d733b6932f4680874dbbf3.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/920487741274a1066a0aefb110711dde.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/cea4ac187cbb465180e89f38250b3970.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/92481d5a4f3780e6c19a9ab4b1006d32.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/9aa8a716a31b0f51b70fdf9bdb257909.png)
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2020-01-03更新
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275次组卷
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4卷引用:上海市南模中学2017-2018学年高三上学期开学考数学试题
名校
3 . 设
为数列
前
项的和,![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5c7c64e93b4e092dc6b3d4fc4393bb35.png)
,数列
的通项公式![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0c86951c02fc7ae8598c09f69ad585eb.png)
.
(1)求数列
的通项公式;
(2)若
,则称
为数列
与
的公共项,将数列
与
的公共项,按它们在原数列中的先后顺序排成一个新数列
,求
的值;
(3)是否存在正整数
、
、![](https://staticzujuan.xkw.com/quesimg/Upload/formula/36a1b09c653185842513e24ebba60bb3.png)
使得
成立,若存在,求出
、
、
;若不存在,说明理由.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d3cfeacc29e6a61c5b3b4e439c0a91df.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/5c7c64e93b4e092dc6b3d4fc4393bb35.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/cf6e5629ab1d2ed93025a91df8e4c9d4.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5fce83115a50f99e08e9a2db7267aeed.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0c86951c02fc7ae8598c09f69ad585eb.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/cf6e5629ab1d2ed93025a91df8e4c9d4.png)
(1)求数列
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/63d471926f7b27322d90c82b9ce21d3d.png)
(2)若
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d369e93e80d14de80311d1984572f787.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5c02bc0c74292b1e8f395f90935d3174.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/63d471926f7b27322d90c82b9ce21d3d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5fce83115a50f99e08e9a2db7267aeed.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/63d471926f7b27322d90c82b9ce21d3d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5fce83115a50f99e08e9a2db7267aeed.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/8d813f3ca8db41a4db6c18eac30fef98.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c8323971c280d065008036a42b94cd74.png)
(3)是否存在正整数
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/11bc05f41215f9894e11d1df0465751a.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c5873c01192b7d33b7483f444f90b5b0.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/36a1b09c653185842513e24ebba60bb3.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0bf956c1aab257331cafa8d2d4ddcb71.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/24dd1ec3d1b75b0e49599eb6416d5126.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/11bc05f41215f9894e11d1df0465751a.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c5873c01192b7d33b7483f444f90b5b0.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/36a1b09c653185842513e24ebba60bb3.png)
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4 . 已知数列
满足
,且![](https://staticzujuan.xkw.com/quesimg/Upload/formula/32d11354dc8b7171c2bfecdffdb3b65f.png)
,若
对任意
恒成立,则正整数
的最小值是________
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/63d471926f7b27322d90c82b9ce21d3d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/43f5a2d5f61aea0bbc24d5cfa9d44dc6.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/32d11354dc8b7171c2bfecdffdb3b65f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/807d533ab6e00a24b2794ab6a6e15f84.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2627ec0b75380530d2df867be0ab1f99.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/48f093c61867ee4ce75f951d46b9b123.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f0a532e15e232cb4b99a8d4d07c89575.png)
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5 . 已知数列
满足
,
,(
,
,
),则“
”是“数列
为等差数列”的( )
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b4be2164a2c67d6163faee87a10942bb.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b065334d8f60c49f4bd3d9f1373fe4cd.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/efec1604d7cd6ee059d42b7a149a09a5.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/af5cf9c12181dd8683944b2b30bf8e08.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/09a0ad70584ca1e1e9cb9178a0ac1c9e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/790fd1b4fe3a98055b08bcb9d332f072.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7551011cfb75b26f35b07d6617c6a18b.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b4be2164a2c67d6163faee87a10942bb.png)
A.充分不必要条件 | B.必要不充分条件 |
C.充要条件 | D.既不充分也不必要条件 |
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2019-12-04更新
|
1225次组卷
|
19卷引用:上海市杨浦高级中学2016-2017学年高三下学期开学考试数学试题
上海市杨浦高级中学2016-2017学年高三下学期开学考试数学试题2018届高三数学训练题(40):数列中的易错题 (已下线)北京市第四中学2023届高三上学期开学测试数学试题河北省唐山市第一中学2019年高三上学期期中数学(理)试题浙江省绍兴市柯桥区2018-2019学年高三下学期5月教学质量调测数学试题河北省唐山一中2020届高三上学期期中数学(文)试题(已下线)考点22 等差数列及其前n项和-备战2021年高考数学(理)一轮复习考点一遍过(已下线)考点21 等差数列及其前n项和-备战2021年高考数学(文)一轮复习考点一遍过(已下线)课时22 数列、等差数列、等比数列-2022年高考数学一轮复习小题多维练(上海专用)(已下线)专题29 等差数列通项与前n项和福建省惠安惠南中学2018-2019学年高二12月月考数学(理)试题【全国百强校】辽宁省鞍山市第一中学2018-2019学年高二上学期期中考试数学(理)试题【全国百强校】辽宁省鞍山市第一中学2018-2019学年高二上学期期中考试数学(文)试题(已下线)4.2.1 等差数列的概念-2021-2022学年高二数学同步培优训练系列(苏教版2019选择性必修第一册)北京首师附中2021~2022学年高二上学期1月月考数学试题北京市人大附中2022-2023学年高二数学期末复习参考试题(3)河南省许昌市2022-2023学年高二上学期期末文科数学试题河南省许昌市2022-2023学年高二上学期期末理科数学试题【北京专用】专题15(一轮复习)集合与常用逻辑(第二部分)-高二上学期名校期末好题汇编
6 . 已知数列
都是由实数组成的无穷数列.
(1)若
都是等差数列,判断数列
是否是等差数列,说明理由;
(2)若
,且
是等比数列,求
的所有可能值;
(3)若
都是等差数列,数列
满足
,求证:
是等差数列的充要条件是:
中至少有一个是常数.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/62e567d7e9761951a266953c8d5042ac.png)
(1)若
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/62e567d7e9761951a266953c8d5042ac.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5344eadd4711db34e3f935aedd5fb270.png)
(2)若
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f8659da8209abcfda8b98555359c20ce.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5344eadd4711db34e3f935aedd5fb270.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f0a532e15e232cb4b99a8d4d07c89575.png)
(3)若
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/62e567d7e9761951a266953c8d5042ac.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/57ef6d44448092ebdb9e4a49d866a749.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b9221c0c92a526f65533cdc5400767af.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/57ef6d44448092ebdb9e4a49d866a749.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/62e567d7e9761951a266953c8d5042ac.png)
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7 . 在数列
中,
,则![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b6539b22a82fc2e91c884d5ca8b673d4.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/83cf38189d5cbf627d2b82ac0eb76006.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/8177f8261b9fe789d44c1c2682e31488.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b6539b22a82fc2e91c884d5ca8b673d4.png)
A.等于![]() ![]() | B.等于![]() ![]() | C.等于![]() | D.不存在 |
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8 . 已知数列
的通项公式为
,定义使
为整数的数
叫做“数列积优数”.那么在区间
内的所有“数列积优数”的和等于_____ .
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/83cf38189d5cbf627d2b82ac0eb76006.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e196c5f5af02fb9f50d39949fe32ca7c.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/88792297aec630d316087eefeb185808.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/1be5b3f24056e94e16c9700d72ba2948.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/308172c0909e2d8b24ef2ff7d68cf764.png)
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9 . 已知函数
,若对于正数
,直线
与函数
的图象恰有
个不同交点,则![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7d444d2ca32dbf5ba01ce72391f5d605.png)
______ .
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ccec6a978a64616bf26ff67aeedd0e8d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a2a87c4ba9f341a9d01c6ce7422273ac.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/dbeedfeeb6d3fe123b6170962b97aeb4.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/09f86f37ec8e15846bd731ab4fcdbacd.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2def5aa62f497709e1bd8258583d62fa.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7d444d2ca32dbf5ba01ce72391f5d605.png)
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2019-11-08更新
|
466次组卷
|
2卷引用:上海市杨浦高级中学2016-2017学年高三下学期开学考试数学试题
名校
10 . 定义域为
,且对任意实数
、
都满足不等式
的所有函数
组成的集合记为
,例如
,试写出一个函数
,使得数列极限
,
,则![](https://staticzujuan.xkw.com/quesimg/Upload/formula/dd3c988d875438535244ee2b092a779b.png)
________
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a43b2faa4f81f32d94612dce724e772b.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c814128ea2139e33db94ea590e7c2223.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/aec19b68e3add9d5bfcc6269a1855b87.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5a7cd59277a15b4d9063be84a40d5541.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4fe7d5809da02c15a43a0e9a898b9086.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ac047e91852b91af639feec23a9598b2.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/8bce5edf6bcdccdf622b561ea9e65464.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e96f3ea0467dc6393d7c4b602175a394.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/1fdbcb0db719acb1830a03539831dac8.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/32df8d3fa0e0e86b4299789cf25c1d08.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/dd3c988d875438535244ee2b092a779b.png)
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2019-11-07更新
|
154次组卷
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3卷引用:上海市南模中学2017-2018学年高三上学期开学考数学试题