在无穷数列
中,
,
是给定的正整数,
,
.
(1)若
,
,写出
,
,
的值;
(2)证明:存在
,当
时,数列
中的项呈周期变化;
(3)若
,
的最大公约数是
,证明数列
中必有无穷多项为
.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b28ef6f1b2279af482557a8ea46f2e43.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/8d04a8b7a7595251251b8e0b7e665e8c.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a5453ec6a9e8b96357c888ea863ddcf7.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/bb9cce535c2a1e74ca53ffda6a74f08c.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/bc3ede255fecf6aba650c90309d62670.png)
(1)若
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/dfec53e7ec3a3ba1c82a5c41e87fd258.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e7f83381978ab0c8f4714bab33c875dd.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/164c49a0a9d3f6e67c9a59393d5b68a4.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e90d3b3bbc187e571ebd740190200b43.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/879f722d685a282c1ce2d0ad4f4e5cba.png)
(2)证明:存在
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b17e3e3e11d5dc0724cd60e81875da73.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/40aac3b8bed3f6e9b79a1f7c0ff6c830.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b28ef6f1b2279af482557a8ea46f2e43.png)
(3)若
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/8d04a8b7a7595251251b8e0b7e665e8c.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a5453ec6a9e8b96357c888ea863ddcf7.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/15befbdad977723a86194979c675ee5d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b28ef6f1b2279af482557a8ea46f2e43.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/15befbdad977723a86194979c675ee5d.png)
更新时间:2022-10-24 11:08:59
|
相似题推荐
解答题-问答题
|
困难
(0.15)
【推荐1】无穷数列
、
、
满足:
,
,
,
,记
(
表示3个实数
、
、
中的最大数).
(1)若
,
,
,求数列
的前
项和
;
(2)若
,
,
,当
时,求满足条件
的
的取值范围;
(3)证明:对于任意正整数
、
、
,必存在正整数
,使得
,
,
.
![](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/48f093c61867ee4ce75f951d46b9b123.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b773fc8fe3271fa6c6f7d2f363eca583.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b5d157780435da2644c6d6872253ef09.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/237aa37d009db1c9f9e698e64e488e72.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/939319ab216b7bcffca1ce8c22ade4db.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0ff665b6fb77ea85ca03c33f61479c75.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/96abfe2da27a63e6affb19a0c80236d9.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/686ece75006ad358f23314dc8a246e11.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c59e7c7a84a4bdb959e95536d0404ceb.png)
(1)若
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2cdf53108bee755f5aa9a34ea4d163e4.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5b72ddd7de598464a37b10f03f67b904.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4e42e1961482c32d10aa1b3ba12a6d0f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/8d813f3ca8db41a4db6c18eac30fef98.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b6a24198bd04c29321ae5dc5a28fe421.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/08eb71ecf8d733b6932f4680874dbbf3.png)
(2)若
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/bbe7bdaaf8b0adf10bf2ef6c1255b1dc.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/59dd6c97d2ee3e74ba5730f1cbcc1d43.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/3780d0ba9d33e077c0b59362e7067340.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/24a57996290794e082b21d8f1dfc322a.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4267a6b1c6cefcc928c094cc2f7db43c.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/81dea63b8ce3e51adf66cf7b9982a248.png)
(3)证明:对于任意正整数
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e72adb45c60c2f63b46e65ff787302bf.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b715e7842b95f654f16056a7c7f2abe9.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7936359df4c926b72b48c6fdae55f12d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f0a532e15e232cb4b99a8d4d07c89575.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b6f161d7b4c4e084b8760613b406bc43.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2ac0aae0ac9f14e841458270f150eea7.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2612db6000b9b8aeb21aafb82dbc8ae1.png)
您最近一年使用:0次
解答题-问答题
|
困难
(0.15)
名校
解题方法
【推荐2】已知数列{an}满足:
,且an+1
(n=1,2…)集合M={an|
}中的最小元素记为m.
(1)若a1=20,写出m和a10的值:
(2)若m为偶数,证明:集合M的所有元素都是偶数;
(3)证明:当且仅当
时,集合M是有限集.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/50df3795cc01ff8b300863d3ecbd4564.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/739d0cdd5311172f93979cced053c8d4.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/15a70b95c53fb6655721e2a8c61f5c2c.png)
(1)若a1=20,写出m和a10的值:
(2)若m为偶数,证明:集合M的所有元素都是偶数;
(3)证明:当且仅当
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/cf0086b054ef120408acac806a1b1318.png)
您最近一年使用:0次
解答题-问答题
|
困难
(0.15)
名校
解题方法
【推荐1】已知
为各项均为正数的数列且对满足
的正整数p,q,n都有等式
成立.
(1)判断数列
是否满足等式(*);
(2)证明
的充要条件为
,
;
(3)证明:存在与
有关的常数
,使得对于每个正整数n,都有
.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/83cf38189d5cbf627d2b82ac0eb76006.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0b221847bc9fb81ccd5cba45f544eb70.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a505f9f4d33acfa375f4b4fde55ef025.png)
(1)判断数列
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/60cd8687ed35d6fba1c08609619d4305.png)
(2)证明
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c259287666b28c29be312a668dcdce90.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e72adb45c60c2f63b46e65ff787302bf.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/26c6a0fbf3fef458d93d7b936acc17ef.png)
(3)证明:存在与
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e72adb45c60c2f63b46e65ff787302bf.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/df64046e91b047037f19e4032e3b6de3.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/74d30d43c61b4c81f50d9103df9a46e9.png)
您最近一年使用:0次
解答题-问答题
|
困难
(0.15)
解题方法
【推荐2】设有限数列
:
,定义集合
为数列A的伴随集合.
(1)已知有限数列
:-1,0,1,2和数列
:1,2,4,8.分别写出
和
的伴随集合;
(2)已知有限等比数列
:
,求
的伴随集合M中各元素之和S;
(3)已知有限等差数列
:
,判断0,
,
是否能同时属于
的伴随集合M,并说明理由.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5963abe8f421bd99a2aaa94831a951e9.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7e710265624cd25e9ff1cba21049c6b4.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f64c014274afc8444b5366ed496a09a2.png)
(1)已知有限数列
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/dad2a36927223bd70f426ba06aea4b45.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/acc290b44635265137fdf13146b6a6d9.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/dad2a36927223bd70f426ba06aea4b45.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/acc290b44635265137fdf13146b6a6d9.png)
(2)已知有限等比数列
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5963abe8f421bd99a2aaa94831a951e9.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/235d9f675b6449eda598c2e49f0fd5a6.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5963abe8f421bd99a2aaa94831a951e9.png)
(3)已知有限等差数列
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5963abe8f421bd99a2aaa94831a951e9.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/bb3e9ef023f9cb43f9c9930f3b9620a6.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/3909298815b2f723f4618721d8c0bf1c.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/6cb02a09032d9fa0d9353acb21edb1c5.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5963abe8f421bd99a2aaa94831a951e9.png)
您最近一年使用:0次
解答题-证明题
|
困难
(0.15)
名校
解题方法
【推荐1】无穷数列
满足:
,且对任意正整数
,
为前
项
,
,…,
中等于
的项的个数.
(1)直接写出
,
,
,
;
(2)求证:该数列中存在无穷项的值为1;
(3)已知
,求
.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b4be2164a2c67d6163faee87a10942bb.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b13a6e1d671215fc96e4bee3541d1096.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b6a24198bd04c29321ae5dc5a28fe421.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/090426eb29836bc30c006b3739c08057.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b6a24198bd04c29321ae5dc5a28fe421.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e72adb45c60c2f63b46e65ff787302bf.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/3e88093a749c0d46e0ee931ecfaff925.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/96abfe2da27a63e6affb19a0c80236d9.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/96abfe2da27a63e6affb19a0c80236d9.png)
(1)直接写出
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/3e88093a749c0d46e0ee931ecfaff925.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/6c1ccc6c74b8754e9bcbb3f39a11b6f1.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/daf464629fa321a6ff7401ab79f07083.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f65fc200f10b97588a0c9896277c9c64.png)
(2)求证:该数列中存在无穷项的值为1;
(3)已知
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/03be922ea96e8b27f104f2c0111d750e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/524824d2cc64eeb9e9e267fc56a1fc94.png)
您最近一年使用:0次
解答题-证明题
|
困难
(0.15)
解题方法
【推荐2】若数列
和
的项数均为
,则将数列
和
的距离定义为
.
(1)求数列1,3,5,6和数列2,3,10,7的距离;
(2)记A为满足递推关系
的所有数列
的集合,数列
和
为A中的两个元素,且项数均为
.若
,
,数列
和
的距离
,求m的最大值;
(3)记S是所有7项数列
(其中
,
或1)的集合,
,且T中的任何两个元素的距离大于或等于3.求证:T中的元素个数小于或等于16.
![](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/294f5ba74cdf695fc9a8a8e52f421328.png)
![](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/58eb2bc16ca7ba6db8792eec6e2b48c0.png)
(1)求数列1,3,5,6和数列2,3,10,7的距离;
(2)记A为满足递推关系
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/23093a3f4c23494a943e3957596fee92.png)
![](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/294f5ba74cdf695fc9a8a8e52f421328.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/385275d29d8c8a7841eaeaa3dfab2cdb.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c2865594c03cd3cfcbf3216cdbf08fc0.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/77cb4aa359781e637bd2232813fa8a24.png)
(3)记S是所有7项数列
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/83cf38189d5cbf627d2b82ac0eb76006.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b9d7457bc36b80660dc03b668674f065.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/31bd42f8e3f220a7b1c6f6945e73bc10.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d1c458592ba2d5ddd559b8720438a8fe.png)
您最近一年使用:0次