若有穷数列
满足:
,则称此数列具有性质
.
(1)若数列
具有性质
,求
的值;
(2)设数列
具有性质
,且
为奇数,当
时,存在正整数
,使得
,求证:数列
为等差数列.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ef94592b70bea840c747393959c71b39.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c735a110f4cf68dea9133c78e205b43f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/bf404363fe0f057007b8e8d90a775d90.png)
(1)若数列
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/030ef2d631bb39945bb752932146364b.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/bf404363fe0f057007b8e8d90a775d90.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/cc9927f218d1b9cd9d7a8b979da6c669.png)
(2)设数列
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5963abe8f421bd99a2aaa94831a951e9.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/bf9f50605db5d5f8f3a01ee8e474a112.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/88e6153f9e3bfe84d3a61f388c7fa2b8.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/cd00e20f967cb2bdce939165abd38440.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f0a532e15e232cb4b99a8d4d07c89575.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c1c87acdb6ce8286ea7d256b96801507.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5963abe8f421bd99a2aaa94831a951e9.png)
更新时间:2024-06-04 09:30:25
|
相似题推荐
解答题-问答题
|
困难
(0.15)
【推荐1】若存在常数 k(k∈N * , k≥2)、d、t( d , t∈R),使得无穷数列 {a n }满足a n +1
,则称数列{an }为“段差比数列”,其中常数 k、d、t 分别叫做段长、段差、段比.设数列 {bn }为“段差比数列”.
(1)已知 {bn }的首项、段长、段差、段比分别为1、 2 、 d 、 t .若 {bn }是等比数列,求 d 、 t 的值;
(2)已知 {bn }的首项、段长、段差、段比分别为1、3 、3 、1,其前 3n 项和为 S3n .若不等式 S3n≤ λ ⋅ 3n−1对 n ∈ N *恒成立,求实数 λ 的取值范围;
(3)是否存在首项为 b,段差为 d(d ≠ 0 )的“段差比数列” {bn },对任意正整数 n 都有 bn+6 = bn ,若存在, 写出所有满足条件的 {bn }的段长 k 和段比 t 组成的有序数组 (k, t );若不存在,说明理由.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2647d71d44b12aba3f566311feb059bb.png)
(1)已知 {bn }的首项、段长、段差、段比分别为1、 2 、 d 、 t .若 {bn }是等比数列,求 d 、 t 的值;
(2)已知 {bn }的首项、段长、段差、段比分别为1、3 、3 、1,其前 3n 项和为 S3n .若不等式 S3n≤ λ ⋅ 3n−1对 n ∈ N *恒成立,求实数 λ 的取值范围;
(3)是否存在首项为 b,段差为 d(d ≠ 0 )的“段差比数列” {bn },对任意正整数 n 都有 bn+6 = bn ,若存在, 写出所有满足条件的 {bn }的段长 k 和段比 t 组成的有序数组 (k, t );若不存在,说明理由.
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2】已知集合
,且M中的元素个数n大于等于5.若集合M中存在四个不同的元素a,b,c,d,使得
,则称集合M是“关联的”,并称集合
是集合M的“关联子集”;若集合M不存在“关联子集”,则称集合M是“独立的”.
(1)分别判断集合
与
是“关联的”还是“独立的”?
(2)写出(1)中“关联的”集合的所有的“关联子集”;
(3)已知集合
是“关联的”,且任取集合
,总存在M的“关联子集”A,使得
.若
,求证:
,
,
,
,
是等差数列.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/de70a9c335265f5e4b61a2f7989e2e69.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/8eeda5cef4846ef829069fe27f64e34e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/dcd60406fc788b81ef67654138b352c7.png)
(1)分别判断集合
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4c44f95dd4daea270501b7c0bc0ac34f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2e4de7b549ffad65410afe7e655df0c9.png)
(2)写出(1)中“关联的”集合的所有的“关联子集”;
(3)已知集合
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/9d7e475e8d3a456ec527868697ea17d7.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/498f92bf2e605cdbc91973e29b047566.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ce4d89801d24aa43f47d6a366aad0571.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/6e1ccce8225324817b0577551956464f.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/6c1ccc6c74b8754e9bcbb3f39a11b6f1.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/daf464629fa321a6ff7401ab79f07083.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f65fc200f10b97588a0c9896277c9c64.png)
您最近一年使用:0次
【推荐1】给定数列
,对
,该数列前i项的最大值记为
,后
项的最小值记为
,
.
(1)设
,求
;
(2)设
是公比大于1的等比数列,且
时,证明:
成等比数列;
(3)设
是公差大于0的等差数列,且
,证明:
成等差数列.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/51eab82c7fa97aad2d0080c26e6eff6a.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5dd7b6f92256833e6b9b849db8d4cca1.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e819b87f90651d89fcd258c276294e43.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/851f6c3f42d508d94512d69df452cd3c.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/fdc5c895153932c3e827a464664cef90.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/3334be9aacd2bf3f17d18d30f7eaba29.png)
(1)设
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/9052b6eccc9d007e121cb97a47a419f0.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b89869be2ca7faeac74926049fa509b0.png)
(2)设
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/bcaf910b4633911ce63034ae8fb8ff93.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/390636a89883bd64bf8da9bf8654aff9.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5843d1e13e7fe10aebb2927ab6d61785.png)
(3)设
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5843d1e13e7fe10aebb2927ab6d61785.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/47f0ba65d2ea1d528ed95f8d8cd339d1.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/8a7170836b85b2aad29b01f1af0e86d2.png)
您最近一年使用:0次
解答题-问答题
|
困难
(0.15)
名校
【推荐2】若数列
若满足递推关系
其中
为常数,我们称该数列为k阶常系数齐次线性递推数列,并称方程
为递推关系式(*)的特征方程,该方程的根称为数列
的特征根.我们有以下结论:对于k阶常系数齐次线性递推数列,若其不同的特征根为
,
,…,
,且特征根
的重数为
,则数列
的通项公式为![](https://staticzujuan.xkw.com/quesimg/Upload/formula/3a573c3e3b4c5b02a85d309aee9ffbc2.png)
其中
,
,这里
都是常数,它们由数列初始值可以确定.
(1)若数列
满足
,且
,
,
,求数列
的通项公式;
(2)若数列
满足对于所有非负整数m,n(
),
都成立,且
,求数列
的通项公式;
(3)设边长为1的正六边形ABCDEF,O是六边形的中心,除了六边形的每一条边,我们还从点O到每个顶点连一条线段,共得到12条长度为1的线段,一条路径是指动点沿着上述线段(全部或部分)移动,始点终点均为点O的一条移动路线.求长度为2024的路径共有多少条?(注:根的重数就是方程中同样根的数量)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/83cf38189d5cbf627d2b82ac0eb76006.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/22ab67ba8b0719104e78cfa6ce029290.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/11e26bb035fe18631ca09dd61ba446d5.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d0c87ab1d7f0eaf58fb90e7087ad7e71.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/83cf38189d5cbf627d2b82ac0eb76006.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/8256967311eda335e21bb88f6e726fb8.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ec6ba141730fd5aae78ada1a8eb17d21.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d68e94f023b09352f46cf2ff3afb291c.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/83cf38189d5cbf627d2b82ac0eb76006.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/3a573c3e3b4c5b02a85d309aee9ffbc2.png)
其中
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ed9176aeda3df453783774182340e074.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/1f9b96ef08d0169c0c8ff9a06eb0c5d4.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c1c5521a39235f0b9cdf432d5903aa83.png)
(1)若数列
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/83cf38189d5cbf627d2b82ac0eb76006.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ac06043337b08fece3c5762766fdb2a6.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b065334d8f60c49f4bd3d9f1373fe4cd.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/329785900390130a04a57d0b55aaa569.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/9ddb84ee3769b8977d138638120ed820.png)
![](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/8bd68dad20a530c17474ad6c73be07e1.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b67fc21d26aead8dcbfb36d7df8aa895.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b13a6e1d671215fc96e4bee3541d1096.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/83cf38189d5cbf627d2b82ac0eb76006.png)
(3)设边长为1的正六边形ABCDEF,O是六边形的中心,除了六边形的每一条边,我们还从点O到每个顶点连一条线段,共得到12条长度为1的线段,一条路径是指动点沿着上述线段(全部或部分)移动,始点终点均为点O的一条移动路线.求长度为2024的路径共有多少条?(注:根的重数就是方程中同样根的数量)
您最近一年使用:0次