20-21高二上·全国·单元测试
解题方法
1 . 设集合W由满足下列两个条件的数列{an}构成:①
;②存在实数M,使an≤M(n为正整数)
(1)在只有5项的有限数列{an}、{bn}中,其中a1=1,a2=2,a3=3,a4=4,a5=5,b1=1,b2=4,b3=5,b4=4,b5=1,试判断数列{an}、{bn}是否为集合W中的元素;
(2)设{cn}是等差数列,sn是其前n项和,c3=4,s3=18,证明数列{sn}∈W,并写出M的取值范围;
(3)设数列{dn}∈W,对于满足条件的M的最小值M0,都有dn≠M0(n∈N*)求证:数列{dn}单调递增.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/dc75a9da38151496ca2adce84a977b96.png)
(1)在只有5项的有限数列{an}、{bn}中,其中a1=1,a2=2,a3=3,a4=4,a5=5,b1=1,b2=4,b3=5,b4=4,b5=1,试判断数列{an}、{bn}是否为集合W中的元素;
(2)设{cn}是等差数列,sn是其前n项和,c3=4,s3=18,证明数列{sn}∈W,并写出M的取值范围;
(3)设数列{dn}∈W,对于满足条件的M的最小值M0,都有dn≠M0(n∈N*)求证:数列{dn}单调递增.
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2 . 若函数
满足:对任意实数
以及定义中任意两数
、
(
),恒有
,则称
是下凸函数.
(1)证明:函数
是下凸函数;
(2)判断
是不是下凸函数,并说明理由;
(3)若
是定义在
上的下凸函数,常数
,满足:
,
,且
,求证:
,并求
在
上的解析式.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4fe7d5809da02c15a43a0e9a898b9086.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4799629218b4b62ffa4082b96888e3c6.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/33bd24e647a626899a243a3f3984f90a.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/1538a4b84a99b2da4de9600fc5552c50.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4fe7d5809da02c15a43a0e9a898b9086.png)
(1)证明:函数
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/681d6d27b23b1c41834d7516122f73f9.png)
(2)判断
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f45afdf4d717bb03adac6b899c367acb.png)
(3)若
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4fe7d5809da02c15a43a0e9a898b9086.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/304226ca50149b49702928e44d565964.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2da2ab1f8b5d3281efb94b763fa74081.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f9db2cae6cc39553ca2b984741630917.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ceb4645bb34156bfc57de16ec11300f9.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e61c9a7ed0961f8977a21dab37aab396.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d87cd4403487962c38c8707ba3ab3fa3.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4fe7d5809da02c15a43a0e9a898b9086.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/304226ca50149b49702928e44d565964.png)
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3 . 根据三角不等式我们可以证明:
,当且仅当
,
,
时等号成立.若等式
对任意x,y,
都成立,则符合要求的有序数组
数量为( )
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0e63a54f1a49e7d84cb064ac80e13dac.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/eacd0a48a993d1cd82054d55d80b4b47.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7f8d7c76b84ff78f9333046f71761b02.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/aba383b25120365f4778dc858489199a.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/eafeb20c434b2a9002a1f9700b5bee25.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/76a89495c19be4f58ee3f60940f9765f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/10a57d1215099fab4a97db12b2fa8f14.png)
A.有且仅有6组 | B.有且仅有12组 |
C.大于12组,但为有限多组 | D.无穷多组 |
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4 . 已知
:
为有穷数列.若对任意的
,都有
(规定
),则称
具有性质
.设
.
(1)判断数列
:1,0.1,-0.2,0.5,
:1,2,0.7,1.2,2是否具有性质P?若具有性质P,写出对应的集合
;
(2)若
具有性质
,证明:
;
(3)给定正整数
,对所有具有性质
的数列
,求
中元素个数的最小值.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d3cfeacc29e6a61c5b3b4e439c0a91df.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/83a7c438854813f2ed9f8a1c60b35eb6.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/6d8ef78cc882ed9f321064e44b7f257c.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4c7e9edf6d0468e0f8ca78b8bac63bd0.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/6d7b740bc48c9718a294c11a1485fd14.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d3cfeacc29e6a61c5b3b4e439c0a91df.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/dad2a36927223bd70f426ba06aea4b45.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f46614bf79e50b81f49c1366de9799ba.png)
(1)判断数列
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/9e47cd514b2920609e3781c87df6ab70.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5002f030017f6f0b34a61b2e15c5a9cb.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f1ae9a3b0b7aeb1545b65d91aa371b3c.png)
(2)若
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/9e47cd514b2920609e3781c87df6ab70.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/dad2a36927223bd70f426ba06aea4b45.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/fed1adc648cc7d8fe7ac43df4b918f11.png)
(3)给定正整数
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b6a24198bd04c29321ae5dc5a28fe421.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/dad2a36927223bd70f426ba06aea4b45.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d3cfeacc29e6a61c5b3b4e439c0a91df.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f1ae9a3b0b7aeb1545b65d91aa371b3c.png)
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2卷引用:北京一零一中2023-2024学年高二上学期期中考试数学试题
名校
解题方法
5 . 对在直角坐标系的第一象限内的任意两点作如下定义:若
,那么称点
是点
的“上位点”.同时点
是点
的“下位点”;
(1)试写出点
的一个“上位点”坐标和一个“下位点”坐标;
(2)已知点
是点
的“上位点”,判断点
是否是点
的“下位点”,证明你的结论;
(3)设正整数
满足以下条件:对集合
内的任意元素
,总存在正整数
,使得点
既是点
的“下位点”,又是点
的“上位点”,求满足要求的一个正整数
的值,并说明理由.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/6b2356786e0b902deee0fac769f27dac.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4562f3225c98cf5cb11b47d98c9cc9c3.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b807b9b8da58da1b6778865efccb01b0.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b807b9b8da58da1b6778865efccb01b0.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4562f3225c98cf5cb11b47d98c9cc9c3.png)
(1)试写出点
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/1c39c16d3c056a9627afbc9501e3f8b1.png)
(2)已知点
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4562f3225c98cf5cb11b47d98c9cc9c3.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b807b9b8da58da1b6778865efccb01b0.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/cc5e0def0fab9fecbbbccc7716d9ddd5.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4562f3225c98cf5cb11b47d98c9cc9c3.png)
(3)设正整数
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b6a24198bd04c29321ae5dc5a28fe421.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/47dd8cbf0527e71bbcc1d310209f5cd5.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/294f5ba74cdf695fc9a8a8e52f421328.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f0a532e15e232cb4b99a8d4d07c89575.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5ceb955cff0a243b938fe2d2d1e8a5dc.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a287703170ebf98ba2b52e4f0beb43f4.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/dc3766ab172f0d65eab0ab0ae1fd84d8.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b6a24198bd04c29321ae5dc5a28fe421.png)
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14卷引用:上海市闵行中学、文绮中学2022-2023学年高一上学期期中数学试题
上海市闵行中学、文绮中学2022-2023学年高一上学期期中数学试题北京市大兴区2022-2023学年高一上学期期末考试数学试题(已下线)1.1集合的概念(分层作业)-【上好课】(已下线)高一上学期第一次月考解答题压轴题50题专练-举一反三系列(已下线)高一上学期期中考试解答题压轴题50题专练-举一反三系列湖北省襄阳市第四中学2023-2024学年高一上学期9月月考数学试题上海市复兴高级中学2023-2024学年高一上学期10月月考数学试题(已下线)专题01集合及其表示方法1-【倍速学习法】(沪教版2020必修第一册)(已下线)期中真题必刷压轴30题-【满分全攻略】(沪教版2020必修第一册)(已下线)期中真题必刷压轴60题(15个考点专练)-【满分全攻略】(人教A版2019必修第一册)江苏省苏州市苏州高新区一中2023-2024学年高一上学期10月月考数学试题(已下线)期末真题必刷压轴60题(10个考点专练)-【满分全攻略】(沪教版2020必修第一册)(已下线)期末真题必刷压轴60题(22个考点专练)-【满分全攻略】(人教A版2019必修第一册)(已下线)专题06 信息迁移型【练】【北京版】
名校
解题方法
6 . 在解决问题:“证明数集
没有最小数”时可用反证法证明:
假设
是
中的最小数,则存在
,
可得:
,与假设中“a是A中的最小数”矛盾,
所以数集
没有最小数.
那么对于问题:“证明数集![](https://staticzujuan.xkw.com/quesimg/Upload/formula/148c4902eb8e6a73046dedab761e3abf.png)
,并且
没有最大数”,也可以用反证法证明:我们可以假设
是
中的最大数,则存在
,且
,其中
的一个值可以是__________ (用
、
表示),由此可知,与假设
是
中的最大数矛盾.所以数集
没有最大数.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/79950aacd93566f38d8e16021d2eb23b.png)
假设
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/abc7dff3ffdad01a473cc8bdb236f2d9.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0914b68f106a912420705b2f3928ca42.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a2710435ef4f66f24a0f4b67d7e83f0e.png)
可得:
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/54bfb810e811cb3d9482e2ec0d8db742.png)
所以数集
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/79950aacd93566f38d8e16021d2eb23b.png)
那么对于问题:“证明数集
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/148c4902eb8e6a73046dedab761e3abf.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/eb45566dd4ac7dd3524acdb890c29bb6.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f313d192b9d871f1e543f8ac1209b0a9.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/1ad6060180ef1fa5784a087be85d1f91.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/1da9dcf6c319174c9ea2b1ceaed1649a.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/11a25178d007036b7fbde4ab793c98c7.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4cfc6ee6f3b4da7817d30e1b9dc36d2b.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/bff1301d5d66379471b648952aea6310.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/26e93d8fb77f5bd2c0fc690752dfd771.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4d7e9f86738335a22298559db41037a4.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/1ad6060180ef1fa5784a087be85d1f91.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/1da9dcf6c319174c9ea2b1ceaed1649a.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/1da9dcf6c319174c9ea2b1ceaed1649a.png)
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2卷引用:上海市进才中学2022-2023学年高一上学期10月月考数学试题
解题方法
7 . 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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真题
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8 . 给定有限个正数满足条件T:每个数都不大于50且总和
.现将这些数按下列要求进行分组,每组数之和不大于150且分组的步骤是:首先,从这些数中选择这样一些数构成第一组,使得150与这组数之和的差
与所有可能的其他选择相比是最小的,
称为第一组余差;然后,在去掉已选入第一组的数后,对余下的数按第一组的选择方式构成第二组,这时的余差为
;如此继续构成第三组(余差为
)、第四组(余差为
)、…,直至第N组(余差为
)把这些数全部分完为止.
(1)判断,
,
…
的大小关系,并指出除第N组外的每组至少含有几个数;
(2)当构成第
组后,指出余下的每个数与
的大小关系,并证
;
(3)对任何满足条件T的有限个正数,证明:
.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/af4ee184e4aa3dd89ebc05473e767517.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2858005b9ae89ae080d83dcc13cf8e81.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2858005b9ae89ae080d83dcc13cf8e81.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2b3e95410f3b4fcb0cba425b521d1f67.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7f2cb48c0a69b8c420c0b64b2bfa1ef7.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4804e9b295d3b8de7f05e9c4e8e30a3b.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b768942c5e723cc71609c62c1919298f.png)
(1)判断,
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2858005b9ae89ae080d83dcc13cf8e81.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2b3e95410f3b4fcb0cba425b521d1f67.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b768942c5e723cc71609c62c1919298f.png)
(2)当构成第
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7a72cd8c7b3d469bacee92ff4f9a98e7.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a135cb036833400f3fa1edc92d5ce410.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7199ce73cb1f7e661115e8cf022f7699.png)
(3)对任何满足条件T的有限个正数,证明:
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d9146abed0736e4cb89fbca640acadd7.png)
您最近一年使用:0次
2020-12-03更新
|
594次组卷
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5卷引用:2004 年普通高等学校招生考试数学(理)试题(北京卷)
2004 年普通高等学校招生考试数学(理)试题(北京卷)2004 年普通高等学校招生考试数学(文)试题(北京卷)上海市虹口区复兴高级中学2020-2021学年高一上学期期中数学试题(已下线)上海高一上学期期中【压轴42题专练】(2)(已下线)第六篇 数论 专题1 数论中的特殊数 微点1 数论中的特殊数
名校
解题方法
9 . 定义:记
为
这
个实数中的最小值,记
为
这
个实数中的最大值,例如:
.
(1)求证:
;
(2)已知
,求
的最小值;
(3)若
,求
的最小值.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7e824d15bf3a32ceafbf100e4bf3b6a5.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5bee78f4561539faf2b6f382ce5f94f1.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b6a24198bd04c29321ae5dc5a28fe421.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b75c8ecbf2c10fd090d119238cbfbb1b.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5bee78f4561539faf2b6f382ce5f94f1.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b6a24198bd04c29321ae5dc5a28fe421.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/883d52e4bbbec68682117456d078a2ca.png)
(1)求证:
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/543743dde06d90ad5da3632ef0792f59.png)
(2)已知
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/1aede98f52c2cd9911b09d7faf08a0dd.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/09f86f37ec8e15846bd731ab4fcdbacd.png)
(3)若
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/dd44b30ab4f8d40eb4eb30e8f9f807fa.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/73465a1f9aa03481295bf6bd3c6903ac.png)
您最近一年使用:0次
10 . 设
为正整数,区间
(其中
,
)同时满足下列两个条件:
①对任意
,存在
使得
;
②对任意
,存在
,使得
(其中
).
(Ⅰ)判断
能否等于
或
;(结论不需要证明).
(Ⅱ)求
的最小值;
(Ⅲ)研究
是否存在最大值,若存在,求出
的最大值;若不存在,说明理由.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/54a5d7d3b6b63fe5c24c3907b7a8eaa3.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c724c6119e3e17b6181178ce7e6baf75.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/29d1fd5262cae918d9c8ef6a1bede788.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/33f84aa794bc075d6139177cd2f59925.png)
①对任意
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5bbba3561714a2b7b7b675e4c319e4cc.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f0a532e15e232cb4b99a8d4d07c89575.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b375f090c551bb2817fa942edbf9bd05.png)
②对任意
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/165df5a77d87e7c534898e995f162562.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5bbba3561714a2b7b7b675e4c319e4cc.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/1b5de90d938c439d3a9a8e5e1880604f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/927a02889cbfc416da88181520058c3a.png)
(Ⅰ)判断
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/deb6b5ca66b71ac5daa42ce59f19f72d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/432851e0d0b7a2924da29b9cc5ca1706.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4f6b3e4ab38102e50c861c13496bd215.png)
(Ⅱ)求
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/54a5d7d3b6b63fe5c24c3907b7a8eaa3.png)
(Ⅲ)研究
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/54a5d7d3b6b63fe5c24c3907b7a8eaa3.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/54a5d7d3b6b63fe5c24c3907b7a8eaa3.png)
您最近一年使用:0次
2020-05-12更新
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913次组卷
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2卷引用:2020届北京市西城区高三诊断性考试(二模)数学试题