名校
解题方法
1 . 对于数列
定义
为
的差数列,
为
的累次差数列.如果
的差数列满足
,
,则称
是“绝对差异数列”;如果
的累次差数列满足
,
,则称
是“累差不变数列”.
(1)设数列
:2,4,8,10,14,16;
:6,1,5,2,4,3,判断数列
和数列
是否为“绝对差异数列”或“累差不变数列”,直接写出你的结论;
(2)若无穷数列
既是“绝对差异数列”又是“累差不变数列”,且
的前两项
,
,
(
为大于0的常数),求数列
的通项公式;
(3)已知数列
:
是“绝对差异数列”,且
.证明:
的充要条件是
.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/83cf38189d5cbf627d2b82ac0eb76006.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7a07d79baaaa6a46766269084b5d01da.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/83cf38189d5cbf627d2b82ac0eb76006.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e5dc94bb96914a455346621c4514d0a0.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/0da1eb1dee559bfe3573398ea8dbcf9f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/6cf4b1ce2ae73fb3c886bb24fe4ec47a.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/9eb15cd939b6af954ad0c7e1b0c021a7.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d64495cfce1ec393b97f1a4cf68435c4.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/83cf38189d5cbf627d2b82ac0eb76006.png)
(1)设数列
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a18722354086c42e62334983fc50eb6a.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/cd3b9e816b14051f785aa5aae72b8eed.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a18722354086c42e62334983fc50eb6a.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/cd3b9e816b14051f785aa5aae72b8eed.png)
(2)若无穷数列
![](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/d1bae03ee4ac75dacfb026290e4207dd.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f108d4cbb79fbc793f2dfc9209b9436d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e6807e876b1cbaa47bf0f38dedcce8b6.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5c02bc0c74292b1e8f395f90935d3174.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/83cf38189d5cbf627d2b82ac0eb76006.png)
(3)已知数列
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7f9e8449aad35c5d840a3395ea86df6d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2593f5cb146ebaac56d3127b56595d4b.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2ae58bfd8ae5f887ff5c45432350b184.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/1f76a020285428cecc4342afede16a80.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/53eaa658e2f62d834ab305f410d6ca49.png)
您最近一年使用:0次
2 . 已知集合
,对于集合
的非空子集
.若
中存在三个互不相同的元素
,
,
,使得
,
,
均属于
,则称集合
是集合
的“期待子集”.
(1)试判断集合
,
是否为集合
的“期待子集”;(直接写出答案,不必说明理由)
(2)如果一个集合中含有三个元素
,
,
,同时满足①
,②
,③
为偶数.那么称该集合具有性质
.对于集合
的非空子集
,证明:集合
是集合
的“期待子集”的充要条件是集合
具有性质
;
(3)若
的任意含有
个元素的子集都是集合
的“期待子集”,求
的最小值.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b5a32bb35170ebe4aba4d96ad30fcfe0.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/08eb71ecf8d733b6932f4680874dbbf3.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5963abe8f421bd99a2aaa94831a951e9.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/08eb71ecf8d733b6932f4680874dbbf3.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0a6936d370d6a238a608ca56f87198de.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2c94bb12cee76221e13f9ef955b0aab1.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/071a7e733d466949ac935b4b8ee8d183.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/20d6fc9b90f370fbb27552876b650f8f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/980ab4deb9e7f2bc9288787f5243a4d2.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2d1176ec378d071e8972ffaa3f944952.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5963abe8f421bd99a2aaa94831a951e9.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5963abe8f421bd99a2aaa94831a951e9.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/08eb71ecf8d733b6932f4680874dbbf3.png)
(1)试判断集合
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5ca1c611cfb42aba676bc20f876f8f14.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/570507469628d759e4ebf323fadf79c3.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0f30f56664446f32dbbc2c5f12a99374.png)
(2)如果一个集合中含有三个元素
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/81dea63b8ce3e51adf66cf7b9982a248.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d053b14c8588eee2acbbe44fc37a6886.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e81e59019989b7dc2fb59b037ef6e010.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d561cdf17d3a6d7d57af719cb6100c85.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e55de080a3c1313bbd6ea5c17307c723.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e1433c8103033c67232f2f9ae189608d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/dad2a36927223bd70f426ba06aea4b45.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/08eb71ecf8d733b6932f4680874dbbf3.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5963abe8f421bd99a2aaa94831a951e9.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5963abe8f421bd99a2aaa94831a951e9.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/08eb71ecf8d733b6932f4680874dbbf3.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5963abe8f421bd99a2aaa94831a951e9.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/dad2a36927223bd70f426ba06aea4b45.png)
(3)若
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/18392c5a07408fd70ddee8a30f705305.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/294f5ba74cdf695fc9a8a8e52f421328.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/08eb71ecf8d733b6932f4680874dbbf3.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/294f5ba74cdf695fc9a8a8e52f421328.png)
您最近一年使用:0次
2023-03-21更新
|
1032次组卷
|
6卷引用:北京市丰台区2023届高三一模数学试题
北京市丰台区2023届高三一模数学试题专题12压轴题汇总(10、15、21题)专题01集合与常用逻辑北京卷专题02集合(解答题)(已下线)北京市丰台区2023届高三下学期3月一模数学试题变式题16-21(已下线)第一章 集合与逻辑(压轴题专练)-速记·巧练(沪教版2020必修第一册)
3 . 给定正整数m,数列
,且
.对数列A进行T操作,得到数列
.
(1)若
,
,
,
,求数列
;
(2)若m为偶数,
,且
,求数列
各项和的最大值;
(3)若m为奇数,探索“数列
为常数列”的充要条件,并给出证明.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/cee00267997ecd957562fe62214153ae.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/6e972bd6405268bcb111d97039df7c5f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c8743cb652671f7a19a5c9aca1c65a43.png)
(1)若
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/711b21672fd907c5c92fee1d649e7003.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/ced4e381e8c3336848b8c436dbc584f3.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/adc250de2317c83a904f0ebce5fc2989.png)
(2)若m为偶数,
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/8d14ae78ff7bc3ecb1735171cdeda7f0.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/21548fbce5a8c4385975335a66401bdd.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/adc250de2317c83a904f0ebce5fc2989.png)
(3)若m为奇数,探索“数列
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/adc250de2317c83a904f0ebce5fc2989.png)
您最近一年使用:0次
2022-06-02更新
|
1223次组卷
|
8卷引用:北京市大兴区兴华中学2022届高三三模数学试题
北京市大兴区兴华中学2022届高三三模数学试题北京市第十二中学2022届高三第三次模拟练习数学试题 北京市第十二中学2022届高三下学期第三次模拟练习数学试题北京市对外经济贸易大学附属中学2023届高三上学期12月月考期末综合测试(一)数学试题北京市日坛中学2023届高三上学期12月月考数学试题(已下线)2022年新高考北京数学高考真题变式题13-15题(已下线)2022年新高考北京数学高考真题变式题19-21题(已下线)模块九 数列-2
名校
4 . 设函数
.
(1)求
的最小值,及取得最小值时
的值;
(2)已知
且
,求证:“
”是“
”的充分必要条件.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/692e180a8577d18de0ff28e9c4a884a9.png)
(1)求
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4fe7d5809da02c15a43a0e9a898b9086.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/81dea63b8ce3e51adf66cf7b9982a248.png)
(2)已知
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/74aed2c7b4781fdc4663d56973f26e45.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2958030ec9d7543dda1f529593a915e2.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ca27cc54ca0332245f5167488daa3408.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/9f94345694d4215284c41f87146795ee.png)
您最近一年使用:0次
名校
5 . 若有穷数列
且
满足
,则称
为M数列.
(1)判断下列数列是否为M数列,并说明理由;
① 1,2,4,3.
② 4,2,8,1.
(2)已知M数列
中各项互不相同. 令
,求证:数列
是等差数列的充分必要条件是数列
是常数列;
(3)已知M数列
是
且
个连续正整数
的一个排列.若
,求
的所有取值.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/adc976debe187e9d6162766e99d5beba.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/04aa91499257c87478609c5987cd60b7.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/eb8bafccc3590fb8dcce1b717d372d90.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/83cf38189d5cbf627d2b82ac0eb76006.png)
(1)判断下列数列是否为M数列,并说明理由;
① 1,2,4,3.
② 4,2,8,1.
(2)已知M数列
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/83cf38189d5cbf627d2b82ac0eb76006.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/3d5cbea2c988187a8508c96e4bc7fe7e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/83cf38189d5cbf627d2b82ac0eb76006.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/62c320a0619c63a5b650a1a94c0a5679.png)
(3)已知M数列
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/83cf38189d5cbf627d2b82ac0eb76006.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4caa2af970b457b1e7ee17132c860b5b.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ae12372b9477473e5541f879e13ccc28.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/dc6c18eaf2f4309e6a014a1100c2380f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/8e8a0c49920d0d91486915755f7ff6f1.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/294f5ba74cdf695fc9a8a8e52f421328.png)
您最近一年使用:0次
2022-01-16更新
|
911次组卷
|
4卷引用:北京市丰台区2022届高三上学期数学期末练习试题
北京市丰台区2022届高三上学期数学期末练习试题北京市首都师范大学附属中学2022届高三下学期开学检测数学试题北京市东直门中学2023届高三上学期期中考试数学试题(已下线)专题22 新高考新题型第19题新定义压轴解答题归纳(9大题型)(练习)
6 . 1.如果函数
满足:存在非零常数
,对于
,都有
成立,则称函数
为
函数.
(1)判断
是否是
函数,并说明理由;
(2)已知
(其中
)的图象过点
,证明:
是
函数;
(3)若
,写出
是
函数的充要条件,并证明.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4fe7d5809da02c15a43a0e9a898b9086.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/36a1b09c653185842513e24ebba60bb3.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/1c780149aef1bd77162e85f7f8906a6a.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7e250d8c0f969938beff9d6a6e66b5f1.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4fe7d5809da02c15a43a0e9a898b9086.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0b68df477b3ee45ac0f725db00d465a1.png)
(1)判断
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/1d761c4444f5eac17133caaf19d6b9ef.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0b68df477b3ee45ac0f725db00d465a1.png)
(2)已知
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/95ff35f3b50966a5e3cbb0b5977af7e3.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/94440d3e4c073f94f2b266ff99d50e74.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5da7544af9e0d48ac4a99c8d5290f789.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4fe7d5809da02c15a43a0e9a898b9086.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0b68df477b3ee45ac0f725db00d465a1.png)
(3)若
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/3072b97814d272264a596ebb075c50e3.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4fe7d5809da02c15a43a0e9a898b9086.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0b68df477b3ee45ac0f725db00d465a1.png)
您最近一年使用:0次