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)
更新时间:2024-05-20 20:59:44
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【推荐1】已知函数![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e8c6458979f861d9d422ab08f533921e.png)
.
(1)若
在
上为增函数,求实数
的取值范围;
(2)当
时,记
,求数列
的前
项和为
;
(3)当
时,且
,
,探求
的取值范围.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e8c6458979f861d9d422ab08f533921e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ef075ca4f94a7afe1bc605bd0a6ee9ad.png)
(1)若
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4fe7d5809da02c15a43a0e9a898b9086.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/8938db94f49dcbe0c383fba0241bb0da.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0a6936d370d6a238a608ca56f87198de.png)
(2)当
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/37e9222ffc26c0e6bfbf252ab5d8a520.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/35753e56bcf4452ea0ea8649b6fc9e8b.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/08eb71ecf8d733b6932f4680874dbbf3.png)
(3)当
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/8e258ab9e600435b37465092243d99f6.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/fe276c0522839b1d37086d92612aa7c4.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0ffebb1edd03adae5b1b7535cf767847.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/514e1f85c6766dfcf633397a6f0208e8.png)
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【推荐2】设数列{an}和{bn}的项数均为m,则将数列{an}和{bn}的距离定义为
.
(1)给出数列1,3,5,6和数列2,3,10,7的距离;
(2)设A为满足递推关系an+1=
的所有数列{an}的集合,{bn}和{cn}为A中的两个元素,且项数均为m,若b1=2,c1=3,{bn}和{cn}的距离小于2016,求m的最大值;
(3)记S是所有7项数列{an|1≤n≤7,an=0或1}的集合,T
S,且T中任何两个元素的距离大于或等于3,证明:T中的元素个数小于或等于16.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a94717ffac0bb1ee27488f3a92a4314d.png)
(1)给出数列1,3,5,6和数列2,3,10,7的距离;
(2)设A为满足递推关系an+1=
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d0ac6a3d09cf3568551a1980dce396a0.png)
(3)记S是所有7项数列{an|1≤n≤7,an=0或1}的集合,T
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b980d8446f130dfc405c196109e73ea4.png)
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解答题-证明题
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【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)
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【推荐1】数列
中,给定正整数![](https://staticzujuan.xkw.com/quesimg/Upload/formula/294f5ba74cdf695fc9a8a8e52f421328.png)
,
.定义:数列
满足
,称数列
的前
项单调不增.
(Ⅰ)若数列
通项公式为:
,求
;
(Ⅱ)若数列
满足:
,求证
的充分必要条件是数列
的前
项单调不增;
(Ⅲ)给定正整数![](https://staticzujuan.xkw.com/quesimg/Upload/formula/294f5ba74cdf695fc9a8a8e52f421328.png)
,若数列
满足:
,且数列
的前
项和为
,求
的最大值与最小值.(写出答案即可)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/63d471926f7b27322d90c82b9ce21d3d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/294f5ba74cdf695fc9a8a8e52f421328.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/cad58ed5a48295f7f18a5225ba8d587b.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f9560ef128e41e22e920cad05478703a.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/63d471926f7b27322d90c82b9ce21d3d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a4a1a71b07e029a192496616fb7b51ee.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/63d471926f7b27322d90c82b9ce21d3d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/294f5ba74cdf695fc9a8a8e52f421328.png)
(Ⅰ)若数列
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/63d471926f7b27322d90c82b9ce21d3d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0c8b1004db0d954d20c6254a7308847f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/675123cce20a9ce670fb7ae18943bde7.png)
(Ⅱ)若数列
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/63d471926f7b27322d90c82b9ce21d3d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/10f28ba33c7d7fe2730f4ac058ac2f6b.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b6a2be1c992655c9c3aa49804d2eb4d0.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/63d471926f7b27322d90c82b9ce21d3d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/294f5ba74cdf695fc9a8a8e52f421328.png)
(Ⅲ)给定正整数
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/294f5ba74cdf695fc9a8a8e52f421328.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/cad58ed5a48295f7f18a5225ba8d587b.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/63d471926f7b27322d90c82b9ce21d3d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/198955f27e060b6628f703d0b4d278a6.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/63d471926f7b27322d90c82b9ce21d3d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/294f5ba74cdf695fc9a8a8e52f421328.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f8d7b4bb12628d5ed455d814b8aafa1f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/8f8861a2221f16a11415179361c7058a.png)
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【推荐2】差分密码分析(Differential Cryptanalysis)是一种密码分析方法,旨在通过观察密码算法在不同输入差分下产生的输出差分,来推断出密码算法的密钥信息.对于数列
,规定
为数列
的一阶差分数列,其中
;规定
为
的二阶差分数列,其中
.如果
的一阶差分数列满足
,则称
是“绝对差异数列”;如果
的二阶差分数列满足
,则称
是“累差不变数列”.
(1)设数列
,判断数列
是否为“绝对差异数列”或“累差不变数列”,请说明理由;
(2)设数列
的通项公式
,分别判断
是否为等差数列,请说明理由;
(3)设各项均为正数的数列
为“累差不变数列”,其前
项和为
,且对
,都有
,对满足
的任意正整数
都有
,且不等式
恒成立,求实数
的最大值.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2308a0aeed12a4353b098ae06e04af9c.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/86a3263d776109ee6034a6ee97b37d39.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/83cf38189d5cbf627d2b82ac0eb76006.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/de1b87726fc455bda6b57a6bbf945370.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/27e274217ecbdfeea729eaa317359e77.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/83cf38189d5cbf627d2b82ac0eb76006.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/6eda2ec94bfc822d28635c095bdb758f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/83cf38189d5cbf627d2b82ac0eb76006.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/36b3ffa99683b52161e653e1235cb6f3.png)
![](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/e65e9e65ce496d6a1f8be6d7d0af1bf6.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/83cf38189d5cbf627d2b82ac0eb76006.png)
(1)设数列
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/89d7ba76ae33842a28eed52601094254.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5963abe8f421bd99a2aaa94831a951e9.png)
(2)设数列
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/83cf38189d5cbf627d2b82ac0eb76006.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/895bbc9662386113650ad8a168eff301.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/979d34c8d77abf2ebbb3e8e1f88776c3.png)
(3)设各项均为正数的数列
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/57ef6d44448092ebdb9e4a49d866a749.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/71b78297a65e7fad69635b19928ecc10.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b19123452d0581bfafcabd85c28f598a.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a35f3fd5b7c33cb9c9550636b933157a.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0da40c1842335a4c83f5be6a8b85a382.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/aefdf7c484fe016725e6389dc3f5b324.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a5f4057fbc6a2084aa1a2ad141b1161f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/36a1b09c653185842513e24ebba60bb3.png)
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