名校
1 . 数学家祖冲之曾给出圆周率
的两个近似值:“约率”
与“密率”
.它们可用“调日法”得到:称小于3.1415926的近似值为弱率,大于3.1415927的近似值为强率.由
,取3为弱率,4为强率,得
,故
为强率,与上一次的弱率3计算得
,故
为强率,继续计算,…….若某次得到的近似值为强率,与上一次的弱率继续计算得到新的近似值;若某次得到的近似值为弱率,与上一次的强率继续计算得到新的近似值,依此类推.已知
,则![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a6c57bbef89a37f1a3808c0ceeac0c22.png)
______ ;![](https://staticzujuan.xkw.com/quesimg/Upload/formula/3bb7147e313f9d9f67d19ecb5f499c05.png)
______ .
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/70f5389990c3a0c5373f3bd9fb2454c9.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/598564aec706dff769c5afc4c378c572.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f56d7db04f622cd478559746da307ca0.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/160ae6f860b2c27244b64dc511890a4b.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/167765a997bbc662e4ea8f0183848897.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e72adb45c60c2f63b46e65ff787302bf.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/bb92d6017d8d5cdb1d5cceecfcb3689b.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/3e88093a749c0d46e0ee931ecfaff925.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/6bb45d64f6349111ac5848f0ba2f8da2.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a6c57bbef89a37f1a3808c0ceeac0c22.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/3bb7147e313f9d9f67d19ecb5f499c05.png)
您最近一年使用:0次
2023-06-14更新
|
129次组卷
|
3卷引用:北京市中关村中学2022-2023学年高二下学期期中调研数学试题
北京市中关村中学2022-2023学年高二下学期期中调研数学试题北京高二专题02数列(第一部分)(已下线)第4章 数列单元检测(基础卷)-2023-2024学年高二数学《重难点题型·高分突破》(苏教版2019选择性必修第一册)
2 . 为了响应政府推进菜篮子工程建设的号召,某经销商投资60万元建了一个蔬菜生产基地.第一年支出各种费用8万元,以后每年支出的费用比上一年多2万元,每年销售蔬菜的收入为26万元.设
表示前n年的纯利润(
前n年的总收入
前n年的总费用支出
投资额),则![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7994aca8d4a682b9ed13496b3867e7b2.png)
__________ (用n表示);从第__________ 年开始盈利.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/8d4fc8faefb26b233d4aa9dbef043aae.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7994aca8d4a682b9ed13496b3867e7b2.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4bfc339cf6dd66599db64fa3fa44e608.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4bfc339cf6dd66599db64fa3fa44e608.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7994aca8d4a682b9ed13496b3867e7b2.png)
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2023-06-01更新
|
412次组卷
|
6卷引用:北京市大峪中学2023-2024学年高二下学期期中调研数学试题
北京市大峪中学2023-2024学年高二下学期期中调研数学试题北京名校2023届高三一轮总复习 第2章 函数与导数 2.11 函数的应用(已下线)考点巩固卷14 等差数列(九大考点)(已下线)1.4 数列在日常经济生活中的应用4种常见考法归类-【帮课堂】2023-2024学年高二数学同步学与练(北师大版2019选择性必修第二册)(已下线)模块一专题3 数列的实际应用和综合问题单元检测篇A基础卷(高二人教B版)(已下线)模块一 专题4 数列的实际应用和综合问题单元检测篇A基础卷(高二北师大版)
3 . 已知无穷数列
,若无穷数列
满足:
,都有
,则称
与
“接近”.
(1)设
,
,试判断
与
是否“接近”,并说明理由;
(2)若数列
,
均为等差数列,他们的公差分别为
,
.求证:
与
“接近”的必要条件是“
”;
(3)已知数列
是公差为
的等差数列,若存在数列
满足:
与
“接近”,且
,
,
,
,
中至少有100个正数,求
的取值范围.
![](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/5ff11bb9d064693dae7fd5619fbddc57.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d3dd644fc0373b59f11179da6a242bed.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5fce83115a50f99e08e9a2db7267aeed.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/63d471926f7b27322d90c82b9ce21d3d.png)
(1)设
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b6b9b750e61486d76c5924835384b32c.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/6adeb04186a3114521b912c5ad155455.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5fce83115a50f99e08e9a2db7267aeed.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/63d471926f7b27322d90c82b9ce21d3d.png)
(2)若数列
![](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/5edf900c810371fb21297c15f86d8743.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b31ac1def558351e2e3ed1235c570530.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5fce83115a50f99e08e9a2db7267aeed.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/63d471926f7b27322d90c82b9ce21d3d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0bc82280a60309e03d58340025a43cff.png)
(3)已知数列
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/63d471926f7b27322d90c82b9ce21d3d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5c02bc0c74292b1e8f395f90935d3174.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5fce83115a50f99e08e9a2db7267aeed.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5fce83115a50f99e08e9a2db7267aeed.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/63d471926f7b27322d90c82b9ce21d3d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/45aec1e4ca31a14444f4bc8682ab5d9f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/085a37c2996e097b38235498876dadbf.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b50a9f25dce1e2d1cb2858964e46b70c.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/daa5e9bd516f6282483b92cfe6074623.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4ffdba64d0b29ba1f87bba807c82395f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5c02bc0c74292b1e8f395f90935d3174.png)
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2022-11-08更新
|
184次组卷
|
2卷引用:北京市通州区2023届高三上学期期中质量检测数学试题
4 . 已知数列
,记集合
.
(1)对于数列
,写出集合
;
(2)若
,是否存在
,使得
?若存在,求出一组符合条件的
;若不存在,说明理由;
(3)若
,把集合
中的元素从小到大排列,得到的新数列为
,若
,求
的最大值.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/83cf38189d5cbf627d2b82ac0eb76006.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/3ee179eff06d5da12ffabfb6791b56c0.png)
(1)对于数列
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/29ab6abf23a098f2239d6ed705b1bc63.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0b68df477b3ee45ac0f725db00d465a1.png)
(2)若
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/9260f8989cfd0ffca5a49ffbc0668f14.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/8793fd82e07c5d9e15c3a6926dcfc978.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/8171c326a953584f90d3a210e7d1c0e0.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c639c7e5f1e7e7ee5d5ee2f30b155bb0.png)
(3)若
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/1a694ee63925fe653457f577063d6d7c.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0b68df477b3ee45ac0f725db00d465a1.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f93221fa83808b1fa6eb1d06ec7e55d3.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a23fc93d1dc68e7f30ea696f9bf9f156.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/294f5ba74cdf695fc9a8a8e52f421328.png)
您最近一年使用:0次
5 . 若存在某常数M(或m),对于一切
,都有
(或
),则称数列
的上(或下)界,若数列
既有上界也有下界,则称数列
为“有界”.
(1)已知4个数列的通项公式如下:①
;②
;③
;④
.请写出其中“有界数列”的序号;
(2)若
,判断数列
是否为“有界数列”,说明理由;
(3)在(2)的条件下,记数列
的前n项和为
,是否存在正整数k,使
,都有
成立?若存在,求出k的范围;若不存在,说明理由.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e97769855336d73371930df1f187875e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5612ce06759d0f77ca029d10083f7d1e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/63cad0f23354aa754ade482d849557fe.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b4be2164a2c67d6163faee87a10942bb.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b4be2164a2c67d6163faee87a10942bb.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b4be2164a2c67d6163faee87a10942bb.png)
(1)已知4个数列的通项公式如下:①
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/cc564bcc0eb8c08e939964ab9386ddd9.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/3f725db22ca50414f1eb2f52ae319446.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/32103514089f5575601b19883937d180.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d9c2972fa305cfaea427d330569269c8.png)
(2)若
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/51ca89b5e2017caa331b54e539893f14.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b4be2164a2c67d6163faee87a10942bb.png)
(3)在(2)的条件下,记数列
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b4be2164a2c67d6163faee87a10942bb.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/08eb71ecf8d733b6932f4680874dbbf3.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e4fef5f2a4235817fb704d29e08766e6.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/671c36c8b696c5226c77165a5781faf9.png)
您最近一年使用:0次
解题方法
6 . 已知集合
,
,其中
,且
.若
,且对集合A中的任意两个元素
,都有
,则称集合A具有性质P.
(1)判断集合
是否具有性质P;并另外写出一个具有性质P且含5个元素的集合A;
(2)若集合
具有性质P.
①求证:
的最大值不小于
;
②求n的最大值.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/6e9a3f4c7334a730ea37d803402891d8.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/fb8b572950af972d5e265f689e35314c.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e97769855336d73371930df1f187875e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0704f453b2de48d36911f7db496bbf82.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/1368a045ba80f97383f3d9d7fcdc8f15.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/94a0838190df3e2d7328dae29243d10a.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/85463b225751e4fb81ae802db61176bb.png)
(1)判断集合
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/6632f39a4c514336a74d274bb3d6a77d.png)
(2)若集合
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/fb8b572950af972d5e265f689e35314c.png)
①求证:
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/3d2b789cb4ce6b7919d64d88dbdc1c89.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e7426bc7343f7c515f079530f93e0c3a.png)
②求n的最大值.
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名校
7 . 意大利著名数学家斐波那契在研究兔子繁殖问题时,发现有这样一列数:1,1,2,3,5,…,其中从第三项起,每个数等于它前面两个数的和,后来人们把这样的一列数组成的数列
称为“斐波那契数列”,记
为数列
的前n项和.下列关于“斐波那契数列”的结论:
①
,
②
,
③
,
④
.
其中,所有正确结论的序号是( )
![](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/83cf38189d5cbf627d2b82ac0eb76006.png)
①
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d0876b7e2271371d8a7ea0e77a833a48.png)
②
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/74025df972695f68a7cc0a4c645f3693.png)
③
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b75e9270a7cdbc04065b2f7b2b3a8ecc.png)
④
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f9dd8d7d1a6821122cedd036ef8ecced.png)
其中,所有正确结论的序号是( )
A.①② | B.①②③ | C.①④ | D.①③④ |
您最近一年使用:0次
8 . 我国古代数学名著《九章算术》中有如下“两鼠穿墙”问题:有两只老鼠同时从墙的两面相对着打洞穿墙,大老鼠第一天打进1尺,以后每天进度是前一天的2倍.小老鼠第一天也打进1尺,以后每天进度是前一天的一半.如果墙的厚度为10尺,则两鼠穿透此墙至少在第______ 天.
您最近一年使用:0次
名校
9 . 已知数列A:
,
,…,
具有性质P:对任意
,
与
两数中至少有一个是该数列中的一项,
为数列A的前n项和.
(1)分别判断数列0,1,3,5与数列0,2,4,6是否具有性质P;
(2)证明:
,且
.
![](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/6044f90db8c406954e00291ee9083fe4.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c981868188750ab216366b8272d4b35f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/3541598c0e0e6d5050c5a562515c430e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b13ee542834ccbb57fcc55b1680ca9db.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/08eb71ecf8d733b6932f4680874dbbf3.png)
(1)分别判断数列0,1,3,5与数列0,2,4,6是否具有性质P;
(2)证明:
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d1bae03ee4ac75dacfb026290e4207dd.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/3dc31cec2f263c4fbed39962f960daef.png)
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10 . 设a,b为实数,定义运算“
”,a
b=ab+2a+b
(1)计算3
2的值;
(2)求满足
<0的实数x的取值范围.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/36e16415b61722f9961e412386e6819f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/36e16415b61722f9961e412386e6819f.png)
(1)计算3
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/36e16415b61722f9961e412386e6819f.png)
(2)求满足
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/8fa83c011f60c38d7fde7248755abf42.png)
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