名校
解题方法
1 . 对非空整数集合M及
,定义
,对于非空整数集合A,B,定义
.
(1)设
,请直接写出集合
;
(2)设
,
,求出非空整数集合B的元素个数的最小值;
(3)对三个非空整数集合A,B,C,若
且
,求
所有可能取值.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/3ef96396caccbf2f959e9d233f060317.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ff97e9f30e667709fc602b8dcc7523e2.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e8ef9a7e4979cb5c0e8f4ff92af351dc.png)
(1)设
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/679a7e0835c8200dc4975baf3e89d058.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/048b9f7e0aa69227773cb9d9b7bb6244.png)
(2)设
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f2463f83ca63b14937787c99fcd1958d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d5e79b6edfd5f5bb3866599fcb2aa6f3.png)
(3)对三个非空整数集合A,B,C,若
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/22fcff4bcf7a1e6652774a5aee4519c3.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/72944e6acd452acaa213f6ae23ae9a2c.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b5a6e825795c828f8281e93607d0e1b1.png)
您最近一年使用:0次
2023-11-05更新
|
1340次组卷
|
4卷引用:江苏省徐州市沛县第二中学2024届高三下学期期初测试数学试题
江苏省徐州市沛县第二中学2024届高三下学期期初测试数学试题(已下线)2024年1月普通高等学校招生全国统一考试适应性测试(九省联考)数学试题变式题16-19(已下线)专题1 集合新定义题(九省联考第19题模式)讲北京市清华大学附属中学2023-2024学年高一上学期期中考试数学试题
名校
2 . 设m是实数,已知集合
,集合
,且
,则m的取值范围是_______ .
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/fc088345fb1d4cfdda89d068dd0f93d3.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/104668ced17a26db2ae1862b9f0b23c9.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e63128a77392afc5f8b873b7a67f2b5f.png)
您最近一年使用:0次
2023-09-11更新
|
767次组卷
|
4卷引用:上海市敬业中学2024届高三上学期开学考试数学试题
上海市敬业中学2024届高三上学期开学考试数学试题海南省海口市琼山华侨中学2023-2024学年高二上学期期中考试数学试题海南省省直辖县级行政单位澄迈县澄迈中学2023-2024学年高二上学期期中数学试题(已下线)2.1.4 圆与圆的位置关系(十大题型)(分层练习)-2023-2024学年高二数学同步精品课堂(沪教版2020选择性必修第一册)
23-24高三上·北京·开学考试
名校
3 . 正实数构成的集合
,定义
.当集合
中恰有
个元素时,称集合A具有性质
.
(1)判断集合
,
是否具有性质
;
(2)若集合A具有性质
,且A中所有元素能构成等比数列,
中所有元素也能构成等比数列,求集合A中的元素个数的最大值:
(3)若集合A具有性质
,且
中的所有元素能构成等比数列.问:集合A中的元素个数是否存在最大值?若存在,求出该最大值;若不存在,请说明理由.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/24cb23bb13473e9f87969f2ef5e7782a.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/44e379930acfab9812a8747177c82bb5.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/6c0ebbec9ed95737da28127df0006e9c.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c09b60535bb9fec40ebca4fb3f53adb0.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/cffa35373ec4e4684107b42adb7a5161.png)
(1)判断集合
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0efabd340d3aa9821a8b08436f9d258c.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e94672690f659abc9c06b44be519bc51.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/cffa35373ec4e4684107b42adb7a5161.png)
(2)若集合A具有性质
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/cffa35373ec4e4684107b42adb7a5161.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/6c0ebbec9ed95737da28127df0006e9c.png)
(3)若集合A具有性质
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/cffa35373ec4e4684107b42adb7a5161.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/6c0ebbec9ed95737da28127df0006e9c.png)
您最近一年使用:0次
名校
4 . 对于数集
(
为给定的正整数),其中
,如果对任意
,都存在
,使得
,则称
具有性质
.
(1)若
,且集合
具有性质
,求
的值;
(2)若
具有性质
,求证:
;且若
成立,则
;
(3)若
具有性质
,且
为常数,求数列
的通项公式.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c4622c700325a90d453e6300b886a8e9.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0704f453b2de48d36911f7db496bbf82.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d0bc1a0bba5e6e8ddf6f1f60f78e6490.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/887982e3735dd7ca13293338a12df593.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a6dbbefb5a9955cdbe090c5f0b8a8d37.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/43cbab5722e0fb2df79a07cfe8f1164b.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f022950e0faa45b617d497b01b5292b9.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/dad2a36927223bd70f426ba06aea4b45.png)
(1)若
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7b7511e6ce72a5232820b7007f976be9.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/864dd49f786346bc320deace92f949b0.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/dad2a36927223bd70f426ba06aea4b45.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/81dea63b8ce3e51adf66cf7b9982a248.png)
(2)若
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f022950e0faa45b617d497b01b5292b9.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/dad2a36927223bd70f426ba06aea4b45.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7551ee6e86b2c6e79236dfe3e2e2c24b.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/346549f9adda7eb363f16d355ae68b85.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/87a60302649eb940748da818199e55da.png)
(3)若
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f022950e0faa45b617d497b01b5292b9.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/dad2a36927223bd70f426ba06aea4b45.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/62cf27bef9cafda3dd897e29f3fe1df3.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/1fe1c31a81f198c443e71b83ca662939.png)
您最近一年使用:0次
5 . 对任意正整数n,记集合
,
.
,
,若对任意
都有
,则记
.
(1)写出集合
和
;
(2)证明:对任意
,存在
,使得
;
(3)设集合
.求证:
中的元素个数是完全平方数.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a39352d44787ecda055946f530893f97.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5359f5f086b89cc656cdd4f79a3b7baa.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5df0913f90131b298c8f6f57437f69b9.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/20c1352dca7dc3caf67c1cb937d52795.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d35755ad07f05e7bfe00176d6334389f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/75a28908216e6879a09b372d957be1e0.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/90df641ab645927ee577e79faf18dcdd.png)
(1)写出集合
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/cd3b9e816b14051f785aa5aae72b8eed.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/43a71fc9c0068109dad1382354570665.png)
(2)证明:对任意
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/6e840ba7606959ccea36793f3ef0775d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2b576952835af1f3492f0f3e6d00093e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/90df641ab645927ee577e79faf18dcdd.png)
(3)设集合
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/112d102cbe7ce2bebe0c76e87e89a00c.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/08eb71ecf8d733b6932f4680874dbbf3.png)
您最近一年使用:0次
2023-11-15更新
|
161次组卷
|
4卷引用:北京市第八十中学2023届高三上学期开学考试数学试题
名校
6 . 给定正整数
,设集合
.对于集合
中的任意元素
和
,记
.设
,且集合
,对于
中任意元素
,若
则称
具有性质
.
(1)判断集合
是否具有性质
?说明理由;
(2)判断是否存在具有性质
的集合
,并加以证明;
(3)若集合
具有性质
,证明:
.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0704f453b2de48d36911f7db496bbf82.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a839578f0b23c8aeba01730563a643e9.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ac047e91852b91af639feec23a9598b2.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/9da8a33568ded09f3450bb153b0e5697.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/714ab9e5a6949c90c9bfdd118cfabeb7.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d35e477c52dfbfb80f1fc315143c8b06.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/1368a045ba80f97383f3d9d7fcdc8f15.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7cd94234d029d89c7b788b6d1e225db6.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5963abe8f421bd99a2aaa94831a951e9.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f9855cb665c7f3785a17718be10538af.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/9a2f08194bb663f1a086fa2f555ebf43.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5963abe8f421bd99a2aaa94831a951e9.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/faa6d3ee76dcca88508ec0921f1adf0f.png)
(1)判断集合
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/cbd6650ab1ac1f7426ec68c729671c41.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c581b105a7e14eae97d650ae73adf710.png)
(2)判断是否存在具有性质
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a742b9bb0812b7bb895851cc5a06fa1a.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5963abe8f421bd99a2aaa94831a951e9.png)
(3)若集合
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5963abe8f421bd99a2aaa94831a951e9.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/faa6d3ee76dcca88508ec0921f1adf0f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/9b74258d0a66cadc32ba68697abca894.png)
您最近一年使用:0次
2023-03-27更新
|
1988次组卷
|
13卷引用:广东省深圳中学2023-2024学年高三寒假开学适用性考试数学试题
(已下线)广东省深圳中学2023-2024学年高三寒假开学适用性考试数学试题北京市西城区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(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北京卷专题02集合(解答题)北京市海淀区首都师范大学附属中学2024届高三上学期10月阶段检测数学试题(已下线)高三数学临考冲刺原创卷(二)北京市人大附中2022-2023学年高一下学期期中模拟数学试题(已下线)北京市第四中学2022~2023学年高一下学期期中数学试题(已下线)单元高难问题01集合中的新定义问题-【倍速学习法】(人教A版2019必修第一册)(已下线)专题03集合的运算-【倍速学习法】(人教A版2019必修第一册)北京市中关村中学2023-2024学年高二上学期期中练习数学试题
22-23高三上·上海浦东新·开学考试
名校
7 . 对开区间
,定义
,当实数集合
为
段(
为正整数)互不相交的开区间
的并集时,定义
,若对任意上述形式的
的子集
,总存在
,使得
,其中
,则
的最大值为___________ .
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/095747cd995cc4524071c66ab76e5fe4.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e9fa78977d3830bb863c4df4ba362064.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ac047e91852b91af639feec23a9598b2.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b6a24198bd04c29321ae5dc5a28fe421.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b6a24198bd04c29321ae5dc5a28fe421.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b53f84ec1c2416ead2a3f92d05af188a.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/36ca25c7ef458ef1da40d7f1d2d99c1d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/82a7792efd7f82bfa7549db4cb6ca761.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5963abe8f421bd99a2aaa94831a951e9.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/232d1ce3ad14256b1543e6007ff1675d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e8a593f20de490729bc067552e62661e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0c8145182f289fbed90bbce4fe773205.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/df64046e91b047037f19e4032e3b6de3.png)
您最近一年使用:0次
名校
解题方法
8 . 设集合
中,至少有两个元素,且
满足:①对于任意
,若
,都有
;②对于任意
,若
,则
.若
有4个元素,则
有___________ 个元素.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/68a7a3ca04314b41c3ca332c5a9646ed.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2fe7fd9b0c3c203a053a7ea52b71e7c9.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/3c36aecba41f6f5ff0d46a29dccaaf01.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a11a069688e4c797fcf527eab15afa82.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/8339eab9c659e50db86828b65f825e22.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/566d386cbedb1c8750f4837633c2af64.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/43a5abe56c019ac914e1fcde1865a747.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b5718e9c8baa106b447f9fae23e730de.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/cf231f8f86fb922df4ca0c87f044cec3.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/af500a4e28d6f5b38390b7642eb96ed5.png)
您最近一年使用:0次
2021-12-02更新
|
1847次组卷
|
12卷引用:上海市松江二中2022届高三下学期开学考试数学试题
上海市松江二中2022届高三下学期开学考试数学试题上海市2023届高三下学期开学摸底数学试题(已下线)专题01 集合-2江苏省镇江市六校联谊2021-2022学年高一上学期期中联考数学试题(已下线)1.3 交集、并集(已下线)1.3 并集与交集(第1课时)(分层作业)-【上好课】(已下线)高一上学期第一次月考数学试卷(提高篇)-举一反三系列(已下线)专题1.8 集合与常用逻辑用语全章综合测试卷(提高篇)-举一反三系列(已下线)第1章 集合与逻辑 单元测试(单元重点)--高一数学同步精品课堂(沪教版2020必修第一册)(已下线)高一上学期第一次月考填空题压轴题50题专练-举一反三系列(已下线)第一章 集合与常用逻辑用语(压轴题专练)-速记·巧练(人教A版2019必修第一册)(已下线)高一上学期期末考试填空题压轴题50题专练-举一反三系列
9 . 设数集
满足:①任意
,有
;②任意
、
,有
或
,则称数集
具有性质
.
(1)判断数集
是否具有性质
,并说明理由;
(2)若数集
且
具有性质
.
(i)当
时,求证:
、
、
、
是等差数列;
(ii)当
、
、
、
不是等差数列时,写出
的最大值.(结论不需要证明)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/cf231f8f86fb922df4ca0c87f044cec3.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/1c8647b00cc8c8f35555c7d78cf2812c.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a6e2e79843faf62dde86bf858d1e0569.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/81dea63b8ce3e51adf66cf7b9982a248.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/45c8b2714e2f6ddfdd6b05d3b4de1149.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/9b8e5872f45d4b878b0119997cb5bae2.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/84734fbba70c0b45045fabf8090f810b.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/cf231f8f86fb922df4ca0c87f044cec3.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/dad2a36927223bd70f426ba06aea4b45.png)
(1)判断数集
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b2161a642b95463642adc3892850bc74.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/dad2a36927223bd70f426ba06aea4b45.png)
(2)若数集
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4ddc189d2c675b0e2ade4f7ed40f66fb.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/8509c4b8fef1e10a20fe1c3e9243ac8e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/dad2a36927223bd70f426ba06aea4b45.png)
(i)当
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/76c7867969b14fd642147188b6ebf29c.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/daa5e9bd516f6282483b92cfe6074623.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/96abfe2da27a63e6affb19a0c80236d9.png)
(ii)当
![](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/daa5e9bd516f6282483b92cfe6074623.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/96abfe2da27a63e6affb19a0c80236d9.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b6a24198bd04c29321ae5dc5a28fe421.png)
您最近一年使用:0次
2021-09-26更新
|
589次组卷
|
7卷引用:北京市一六一中学2022届高三上学期开学考试数学试题
10 . 已知集合![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a46d91a898eabc0094137dacb4defa60.png)
.对于
,
,定义
,定义
与
之间的距离为
.
(1)设
,
,
,直接写出
,
,
;
(2)
,判断
与
的大小关系,并给出证明;
(3)证明:
,
,
,
三个数中至少有一个是偶数.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a46d91a898eabc0094137dacb4defa60.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/8a213c770b7898200a9f0fd3f48e7403.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/8aea343234102eeccd40f790ec5ce2c2.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/374c2acfb112a4284400b5ddbd19aa02.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/44a0b3823a1fd3e69af7594da9b8f0f0.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5963abe8f421bd99a2aaa94831a951e9.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7f9e8449aad35c5d840a3395ea86df6d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a005c90b3e44a1737dd3771dbafcb5c2.png)
(1)设
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5794bdc5eb3d74aedd9c05d6de2d69c0.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ea406d4bc7d7fb5d6f0789441028f21b.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/207ff0926bf917ce30f615d23eff451c.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/507d7d4b676e2b1cd0b2bec2fffda025.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e7041adbdd3371e7cd4bd02682115ee7.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ce4a2681390214200443ae07c01a4abe.png)
(2)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/519a1fbbf2ae4158090a505c9494b0e4.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/858291a961c75db554dc5a737c1fcd5b.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f3bcb4828b16c8e845492f1a53ddd9a9.png)
(3)证明:
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/519a1fbbf2ae4158090a505c9494b0e4.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f3bcb4828b16c8e845492f1a53ddd9a9.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b5a6e825795c828f8281e93607d0e1b1.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/3cdfd65ee99c3d93adee6732ae125eb8.png)
您最近一年使用:0次