1 . 已知数列
是无穷数列,其前n项和为
若对任意的正整数
,存在正整数
,
(
)使得
,则称数列
是“S数列".
(1)若
判断数列
是否是“S数列”,并说明理由;
(2)设无穷数列
的前n项和
且
,证明数列
不是“S数列";
(3)证明:对任意的无穷等差数列
,存在两个“S数列"
和
,使得
成立.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/63d471926f7b27322d90c82b9ce21d3d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/34a60fab9ac1eb590b1e3a9b1567f570.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/72ac49ab7c8001c209b8611b9ea40d85.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f0a532e15e232cb4b99a8d4d07c89575.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0f85fca60a11e1af2bf50138d0e3fe62.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/fd52cb7d9da16f9b684819aca74c8de3.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/467295c3a236b7e41b84812a3f74d929.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/63d471926f7b27322d90c82b9ce21d3d.png)
(1)若
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c399549ad8bbdec1e659450fbd13d8ee.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/63d471926f7b27322d90c82b9ce21d3d.png)
(2)设无穷数列
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/63d471926f7b27322d90c82b9ce21d3d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a4b6941b6c2e6767973a16227705c7d9.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5029180d358fd5c6957bef63623eedec.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/63d471926f7b27322d90c82b9ce21d3d.png)
(3)证明:对任意的无穷等差数列
![](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/38ef4c4439b36c2847b0056a116d56d4.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/63c9572319e55d5eb64cc037ab740956.png)
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2 . 设数列
(
)的各项均为正整数,且
.若对任意
,存在正整数
使得
,则称数列
具有性质
.
(1)判断数列
与数列
是否具有性质
;(只需写出结论)
(2)若数列
具有性质
,且
,
,
,求
的最小值;
(3)若集合
,且
(任意
,
).求证:存在
,使得从
中可以选取若干元素(可重复选取)组成一个具有性质
的数列.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d5d8aa940a0e54ac8979395fc6dff741.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/3bcfc48f9bc23cc43085bdb910e7a136.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0cf78e190bbaff91007e36c7c031e588.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/626be2e12f16ff8bf25079992313d6c1.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7cda194c6f9dfc7771f36f9ba481c409.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5a1e76d1341e8e6bd89b7075150536bd.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5963abe8f421bd99a2aaa94831a951e9.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0b68df477b3ee45ac0f725db00d465a1.png)
(1)判断数列
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/838d2fedecb979dd3e44d44f46be5e19.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ea5455416ae7d9d583de1b223dd51733.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0b68df477b3ee45ac0f725db00d465a1.png)
(2)若数列
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5963abe8f421bd99a2aaa94831a951e9.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0b68df477b3ee45ac0f725db00d465a1.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b065334d8f60c49f4bd3d9f1373fe4cd.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/9c9b6e51986fe5d7a7265e0e93adcb4d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0d9953f7e08c89b2d8071046382c93a8.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b6a24198bd04c29321ae5dc5a28fe421.png)
(3)若集合
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0b3c90f8bc8eab3ace049654abc1ce10.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f47a6256640293cbb647399b89addba0.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/8714d5e4b34659a532f65cfed95a0371.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4b71af6590f0f369c164a054a8b63bf6.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/1e9bb415ebf91617fe843b83d0a140ea.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/1e9bb415ebf91617fe843b83d0a140ea.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0b68df477b3ee45ac0f725db00d465a1.png)
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2020-05-11更新
|
1210次组卷
|
8卷引用:2020届北京市朝阳区高三第一次模拟考试数学试题
2020届北京市朝阳区高三第一次模拟考试数学试题上海市2022届高三上学期一模暨春考模拟卷(四)数学试题北京师范大学第二附属中学2022届高三三模数学试题(已下线)北京市海淀区2023届高三上学期期末练习数学试题变式题16-21北京市2023届高三数学模拟试题北京卷专题18数列(解答题)北京市顺义区第一中学2023届高三高考考前适应性检测数学试题(已下线)数列的综合应用
3 . 若无穷数列
满足:存在
,并且只要
,就有
(t为常数,
),则称
具有性质T.
(Ⅰ)若
具有性质T,且![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f66884efff7400f92b530d69d029778d.png)
,
,
,
,
,求
;
(Ⅱ)若无穷数列
的前n项和为
,且
,证明存在无穷多个b的不同取值,使得数列
具有性质T;
(Ⅲ)设
是一个无穷数列,数列
中存在
,且![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e90ebf18a8aee259cf6bf7778bc3df00.png)
.求证:“
为常数列”是“对任意正整数
,
都具有性质T”的充分不必要条件.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/83cf38189d5cbf627d2b82ac0eb76006.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d1ca8d0d3e86377d4c0bac29ed965673.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7470822f9249a37ddfa08070b0ccdd83.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e282bd5d2b5b47ba7ffeff419cfbf405.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/302f9a8d9c619ccc8e6f063abfc49c81.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/83cf38189d5cbf627d2b82ac0eb76006.png)
(Ⅰ)若
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/83cf38189d5cbf627d2b82ac0eb76006.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f66884efff7400f92b530d69d029778d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5b38f675ce932688113f1c19af7da939.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d1928c254cfada1f75a5cd1e34db5a63.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ad2da0ff9dc73d62f8162fc3de186150.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/36ba808c24aeae6a2f34b98ae5ec04ae.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/061fcc2cd084a6bf55aae0d57e6f9dd1.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/6c1ccc6c74b8754e9bcbb3f39a11b6f1.png)
(Ⅱ)若无穷数列
![](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/7077e1039cd3fca42c3c1661f4baf0bd.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/83cf38189d5cbf627d2b82ac0eb76006.png)
(Ⅲ)设
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/034ba25825c13725931c483aa47c9363.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/83cf38189d5cbf627d2b82ac0eb76006.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d1ca8d0d3e86377d4c0bac29ed965673.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e90ebf18a8aee259cf6bf7778bc3df00.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b5bc2b05dc79b18ecb4ac3f9b5c492d4.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/034ba25825c13725931c483aa47c9363.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e72adb45c60c2f63b46e65ff787302bf.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/83cf38189d5cbf627d2b82ac0eb76006.png)
您最近一年使用:0次
名校
4 . 已知大于1的三个实数
满足
,则
的大小关系不可能是( )
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d46d2380152e6efc40909dad0ae96c12.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/9986b1d3ba004708db9442f86e726363.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d46d2380152e6efc40909dad0ae96c12.png)
A.![]() | B.![]() | C.![]() | D.![]() |
您最近一年使用:0次
2020-01-19更新
|
1925次组卷
|
11卷引用:北京市朝阳区2019-2020学年高一上学期期末数学试题
北京市朝阳区2019-2020学年高一上学期期末数学试题2020届山东省菏泽市高三联合模拟考试数学试题黑龙江省大庆实验中学2020届高三综合训练(四)数学(理)试题(已下线)专题八 函数与导数-2020山东模拟题分类汇编(已下线)专题八 函数与导数-山东省2020二模汇编(已下线)专题12 指数函数与对数函数-2020年高考数学(理)母题题源解密(全国Ⅰ专版)江西省南昌市第十中学2021届高三年级上学期第二次月考理科数学试题(已下线)4.2+对数(基础练)-2020-2021学年高一数学十分钟同步课堂专练(苏教版2019必修第一册)安徽省池州市东至县第三中学2020-2021学年高一上学期12月月考数学试题(已下线)4.2 对数(课堂培优)-2021-2022学年高一数学课后培优练(苏教版2019必修第一册)(已下线)第4章《指数与对数》 培优测试卷(二)-2021-2022学年高一数学上册同步培优训练系列(苏教版2019)
名校
5 . 设
为正整数,各项均为正整数的数列
定义如下:
,
(1)若
,写出
,
,
;
(2)求证:数列
单调递增的充要条件是
为偶数;
(3)若
为奇数,是否存在
满足
?请说明理由.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/294f5ba74cdf695fc9a8a8e52f421328.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/63d471926f7b27322d90c82b9ce21d3d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b065334d8f60c49f4bd3d9f1373fe4cd.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/1c711c10f22bfbcc9e1b961020a06d41.png)
(1)若
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/6c7a1d739890a8951586e23b78b035bc.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d7da2f386b78cdf6489efaa2f5820d3e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/bc858b7a95c5006a44067022da09f667.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/3e35eeaabd951fb09b2926807da3685b.png)
(2)求证:数列
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/63d471926f7b27322d90c82b9ce21d3d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/294f5ba74cdf695fc9a8a8e52f421328.png)
(3)若
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/294f5ba74cdf695fc9a8a8e52f421328.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/10e468312d09c6563c9094b710a35a65.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e15ffa7fecea3704dc892ea8cd513c59.png)
您最近一年使用:0次
2020-01-12更新
|
618次组卷
|
4卷引用:北京市朝阳区2019-2020学年高三上学期期末数学试题
解题方法
6 . 甲乙二人轮流掷一枚质地均匀的骰子,甲先掷.规定:若甲掷出1点,则由甲继续掷,否则下一次由乙掷;若乙掷出3点,则由乙继续掷,否则下一次由甲掷,两人始终按此规则进行.记第
次由甲掷的概率为
,则![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b3c54e70dc564246370deed79960af6c.png)
______ ,![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c0ba5711dfbd33e558e0cebf8e1158b9.png)
______ .
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b6a24198bd04c29321ae5dc5a28fe421.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/bf83e20035c3afd6d26ebfd53d768a70.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b3c54e70dc564246370deed79960af6c.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c0ba5711dfbd33e558e0cebf8e1158b9.png)
您最近一年使用:0次
名校
7 . 各项均为非负整数的数列{an}同时满足下列条件:
①a1=m(m
N*);②an⩽n-1(n≥2);③n是a1+a2+‥+an的因数(n ≥1).
(Ⅰ)当m=5时,写出数列{an}的前五项;
(Ⅱ)若数列{an}的前三项互不相等,且n≥3时,an为常数,求m的值;
(Ⅲ)求证:对任意正整数m,存在正整数M,使得n≥M时,an为常数.
①a1=m(m
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a02d44492b51b0e08208fdc0d1707025.png)
(Ⅰ)当m=5时,写出数列{an}的前五项;
(Ⅱ)若数列{an}的前三项互不相等,且n≥3时,an为常数,求m的值;
(Ⅲ)求证:对任意正整数m,存在正整数M,使得n≥M时,an为常数.
您最近一年使用:0次
2020-05-09更新
|
410次组卷
|
8卷引用:北京市朝阳区2017届高三二模数学(理工科)试题
名校
8 . 在无穷数列
中,
是给定的正整数,
,
.
(Ⅰ)若
,写出
的值;
(Ⅱ)证明:数列
中存在值为
的项;
(Ⅲ)证明:若
互质,则数列
中必有无穷多项为
.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/63d471926f7b27322d90c82b9ce21d3d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c0158862238e250d2a2598b7d4ecd148.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/bd02a026d46e62c9c515b0d815c9012e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/cea4ac187cbb465180e89f38250b3970.png)
(Ⅰ)若
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/93727eb0fca78f0c1097015bd63c3656.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4d6bd8b276f1d192604e7371d5715f95.png)
(Ⅱ)证明:数列
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/63d471926f7b27322d90c82b9ce21d3d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c95b6be4554f03bf496092f1acdfbb89.png)
(Ⅲ)证明:若
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c0158862238e250d2a2598b7d4ecd148.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/63d471926f7b27322d90c82b9ce21d3d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/bdaa19de263700a15fcf213d64a8cd57.png)
您最近一年使用:0次
2019-04-09更新
|
670次组卷
|
5卷引用:【区级联考】北京市朝阳区2019届高三第一次(3月)综合练习(一模)数学理试题
名校
9 . 已知
是由正整数组成的无穷数列,对任意
,
满足如下两个条件:①
是
的倍数;②
.
(1)若
,
,写出满足条件的所有
的值;
(2)求证:当
时,
;
(3)求
所有可能取值中的最大值.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2506385d68e133523a24a5f5770adb4d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/36b98ef143f8159f3a7dafa1fd2f2370.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/96abfe2da27a63e6affb19a0c80236d9.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/96abfe2da27a63e6affb19a0c80236d9.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b6a24198bd04c29321ae5dc5a28fe421.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/84c2f38773a9963dbcf05eaac4895b1c.png)
(1)若
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f7a78dfd380962e481d14d8b8816a642.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4479856137bf1d2df2f21e31d67963c0.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/6c1ccc6c74b8754e9bcbb3f39a11b6f1.png)
(2)求证:当
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a72fe1764000d52c3f9b3356a4e2448f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/86440c682e4ce6c7e08fd4109a52ff77.png)
(3)求
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e72adb45c60c2f63b46e65ff787302bf.png)
您最近一年使用:0次
2019-01-21更新
|
477次组卷
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3卷引用:【区级联考】北京市朝阳区2019届高三期末考试数学(理科)试题
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解题方法
10 . 已知函数
,若
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2018-11-15更新
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6卷引用:【市级联考】北京市朝阳区2019届高三上学期期中考试数学理试题