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解题方法
1 . 已知函数
.
(1)若
满足
为R上奇函数且
为R上偶函数,求
的值;
(2)若函数
满足
对
恒成立,函数
,求证:函数
是周期函数,并写出
的一个正周期;
(3)对于函数
,
,若
对
恒成立,则称函数
是“广义周期函数”,
是其一个广义周期,若二次函数
的广义周期为
(
不恒成立),试利用广义周期函数定义证明:对任意的
,
,
成立的充要条件是
.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/17422461d5ec2bff93452619c6b774f3.png)
(1)若
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4fe7d5809da02c15a43a0e9a898b9086.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/69b727eb9da56be079445321cf61cf26.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2be344d1925b25e44f3f8b34d2c193ee.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/9b186e49220460b09f85519aa657527b.png)
(2)若函数
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/fbf03e1296f7f5bb315c87893caee079.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4056806dc4a2f28e267f879b6f5c0079.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/24a57996290794e082b21d8f1dfc322a.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/78c204be088a8fc6c096eedd5b1e7dc7.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0eb7df298a9364b36e079a61caec815c.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0eb7df298a9364b36e079a61caec815c.png)
(3)对于函数
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/51c530f4b7491b95acb8ce3eef9aa09d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e06d64b48da95b74aa5e12bc5da127dd.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/95c90d0f5f17344c0eb75c2aea394bb6.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/24a57996290794e082b21d8f1dfc322a.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/51c530f4b7491b95acb8ce3eef9aa09d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2183ba00d69af06d9a950469b38cfe4b.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/60a35277c37144276ead40bb74a51481.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2183ba00d69af06d9a950469b38cfe4b.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/eb05fd7662d05b9e2051b044de722840.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0fd423a80d5b6fea8753fa1813cfbcc4.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/33bd24e647a626899a243a3f3984f90a.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/859458471c86ae39e0cc42d2d960d03e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f05dd02b6f561dcf94bab8a3160108d5.png)
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2020-08-25更新
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6卷引用:上海市建平中学2019届高三下学期5月月考数学试题
上海市建平中学2019届高三下学期5月月考数学试题2019年上海市建平中学高三三模数学试题(已下线)专题2.3 函数的奇偶性与周期性(精讲)-2021年高考数学(理)一轮复习学与练(已下线)专题2.3 函数的奇偶性与周期性(精讲)-2021届高考数学(理)一轮复习讲练测(已下线)3.2函数的基本性质-2020-2021学年高一数学同步课堂帮帮帮(人教A版2019必修第一册)(已下线)专题03 函数的概念与性质(模拟练)-2
2 . 已知函数:
且
.
(1)证明:
对定义域内的所有
都成立;
(2)当
的定义域为
时,求证:
的值域为
;
(3)设函数
,求
的最小值.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ca507b9492083d2c881b824dc98e28ca.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f7297210ecc4a06625860ef4215b42f7.png)
(1)证明:
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/6870269f258c153030dc97c950698675.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/81dea63b8ce3e51adf66cf7b9982a248.png)
(2)当
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4fe7d5809da02c15a43a0e9a898b9086.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f69b3ada8af24923589888415f4dabe6.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4fe7d5809da02c15a43a0e9a898b9086.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ef2f9766c341bc0bd1362e8e2bd9f552.png)
(3)设函数
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/3141a4cbf5e3e12ccca84f2d0427430e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/be1ce3f01e2b6364f9a9fdaf197d5e29.png)
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2020-10-07更新
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2卷引用:四川省成都七中万达学校2019-2020学年高一10月月考数学试题
名校
3 . 已知集合![](https://staticzujuan.xkw.com/quesimg/Upload/formula/944960fa69073fa30905b08b9bcd1d32.png)
(1)证明:若
,则
是偶数;
(2)设
,且
,求实数
的值;
(3)设
,求证:
;并求满足不等式
的
的值.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/944960fa69073fa30905b08b9bcd1d32.png)
(1)证明:若
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/acfc595518cf752e1c7903dfff93dbda.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/13f40c24c64bbb0645fcf585f4e66872.png)
(2)设
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/3d34afba5f43d301946429980327d3be.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7fad1f1fff5c82010595cc84a8806b75.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/294f5ba74cdf695fc9a8a8e52f421328.png)
(3)设
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/3bd9a96e7e998e198796d19cece04bf0.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/68769211e17a7504970e39d20fa1020a.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a09b4427cd9d1ca6e0b7f7baabf2d1df.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b6a24198bd04c29321ae5dc5a28fe421.png)
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2020-11-02更新
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7卷引用:重庆市万州第二高级中学2020-2021学年高一上学期10月月考数学试题
重庆市万州第二高级中学2020-2021学年高一上学期10月月考数学试题重庆市万州二中2020-2021学年高一上学期10月月考数学试题(已下线)1.1集合的概念(专题强化卷)-2021-2022学年高一数学课堂精选(人教版A版2019必修第一册)(已下线)知识点01 集合的概念与表示-2021-2022学年高一数学同步精品课堂讲+例+测(苏教版2019必修第一册)(已下线)1.1 集合的概念-【优质课堂】2021-2022学年高一数学同步课时优练测(人教A版2019必修第一册)(已下线)第01讲 集合的概念与表示(教师版)-【帮课堂】2021-2022学年高一数学同步精品讲义(苏教版2019必修第一册)(已下线)第二章 等式与不等式(压轴题专练)-速记·巧练(沪教版2020必修第一册)
名校
4 . 已知函数
其反函数为![](https://staticzujuan.xkw.com/quesimg/Upload/formula/6a1cfb60420ff7e72c1b9d64f69ae063.png)
(1)求证:对任意
都有
,对任意
都有![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c70f029102bd0b5e762717c3889671fb.png)
(2)令
,讨论
的定义域并判断其单调性(无需证明).
(3)当
时,求函数
的值域;
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2bb2fb6043949ffd4a0fc14967e23c90.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/6a1cfb60420ff7e72c1b9d64f69ae063.png)
(1)求证:对任意
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2dcbca3478eae63853d2aab5332e2e56.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c0b8e9b3f07d91da4d256d18df240fe5.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/edae93ec9de65d7e8afd2a53063c8ae6.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c70f029102bd0b5e762717c3889671fb.png)
(2)令
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/57a76b586e289841016c49819b99559f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/cd0f5e152398772be9ec9555664a6407.png)
(3)当
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/8e258ab9e600435b37465092243d99f6.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4ee2ec7a69d7d1f401e04afd231f6515.png)
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5 . 已知函数
,且
是定义在
上的奇函数.
(1)求实数t的值并判断函数
的单调性(不需要证明);
(2)关于x的不等式
在
上恒成立,求实数b的取值范围;
(3)若
在
上有两个零点
,求证:
且
.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b3b9e381cee106c590bfbd7ee5f8ecb6.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d09e8117906e8d3b634e04dd6ea010e8.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4aa0df7f1e45f9de29e802c7f19a4f64.png)
(1)求实数t的值并判断函数
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4fe7d5809da02c15a43a0e9a898b9086.png)
(2)关于x的不等式
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4b99aad5444a5ae8f6ede73df2796bf8.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/8938db94f49dcbe0c383fba0241bb0da.png)
(3)若
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/aa40b8865fc6621f349fcce91f1b1924.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/8938db94f49dcbe0c383fba0241bb0da.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/8ce7ae90d808f05e86ea063238e4b2f9.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/dd7e88a0a0bb2f88f38633b18a3cd158.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/77b5cbd907176f31048cf8d07ef56323.png)
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2020-01-09更新
|
535次组卷
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2卷引用:天津市武清区杨村第一中学2021-2022学年高一上学期第三次阶段性检测数学试题
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6 . 已知函数![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4749985beebb82af49bf81daed263b91.png)
在区间
上的最大值为
,最小值为
,记![](https://staticzujuan.xkw.com/quesimg/Upload/formula/764252096a427d22e7806422c0bff54f.png)
;
(1)求实数
、
的值;
(2)若不等式
对任意
恒成立,求实数
的范围;
(3)对于定义在
上的函数
,设
,
,用任意的![](https://staticzujuan.xkw.com/quesimg/Upload/formula/97ea8f47d8d8d9e1832d52b1c7425450.png)
将
划分为
个小区间,其中
,若存在一个常数
,使得![](https://staticzujuan.xkw.com/quesimg/Upload/formula/29258a85f75b9cb8b0f950d270165f84.png)
恒成立,则称函数
为
上的有界变差函数;
①试证明函数
是在
上的有界变差函数,并求出
的最小值;
②写出
是在
上的有界变差函数的一个充分条件,使上述结论成为其特例;(不要求证明)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4749985beebb82af49bf81daed263b91.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/3bf8197e4f3fd18815045d29c357a863.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a248e47163191168a1b363937eebd618.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b8860d9787671b53b1ab68b3d526f5ca.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/bdaa19de263700a15fcf213d64a8cd57.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/764252096a427d22e7806422c0bff54f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/3210274e57cc0487a58b99ea274b8aa1.png)
(1)求实数
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0a6936d370d6a238a608ca56f87198de.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2c94bb12cee76221e13f9ef955b0aab1.png)
(2)若不等式
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/05c5e6b1cf8b9ace30d26f232da3dac6.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c4166972dec0aa3e8694a44eeb941a08.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f0a532e15e232cb4b99a8d4d07c89575.png)
(3)对于定义在
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/627565d32e529cafcd2744d006ec6de2.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/aeb1ed40a8f67e93401e544284ceaaf2.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0bc272934625d1232ad34eedc6b23267.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/752c287b0680a053e18be60f6e34ebba.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/97ea8f47d8d8d9e1832d52b1c7425450.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ac1b6d5c6b222d95759ea7d39f0b908f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/627565d32e529cafcd2744d006ec6de2.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b6a24198bd04c29321ae5dc5a28fe421.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c9b09511efe31176effed50209b4aa5c.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2480f87a11c4cd450bc9454ea7276722.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/29258a85f75b9cb8b0f950d270165f84.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b0fc2920f7b5d960d1a927fed29b6a50.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/aeb1ed40a8f67e93401e544284ceaaf2.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/627565d32e529cafcd2744d006ec6de2.png)
①试证明函数
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4fe7d5809da02c15a43a0e9a898b9086.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/da34ce730f711c09909d53806fe2330a.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ac047e91852b91af639feec23a9598b2.png)
②写出
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4fe7d5809da02c15a43a0e9a898b9086.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/627565d32e529cafcd2744d006ec6de2.png)
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2020-01-07更新
|
446次组卷
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2卷引用:上海市控江中学2016-2017学年高三上学期第一次月考数学试题
名校
7 . 已知定义在
上的函数
满足:对任意
都有
.
(1)求证:函数
是奇函数;
(2)如果当
时,有
,试判断
在
上的单调性,并用定义证明你的判断;
(3)在(2)的条件下,若
对满足不等式
的任意
恒成立,求
的取值范围.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/455ba3d3e46977fcbe5b71f8bb9df4be.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/09f86f37ec8e15846bd731ab4fcdbacd.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/8c75a15990fdcf1de0a9ac9f475e3c92.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/49074b2fc18e7edb1b3b6b4e6f9737c9.png)
(1)求证:函数
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/09f86f37ec8e15846bd731ab4fcdbacd.png)
(2)如果当
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e01d07f3a82196cabb98a2ab98686eb0.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a71baf6217604517fd98fa97d0f55b43.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/09f86f37ec8e15846bd731ab4fcdbacd.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/455ba3d3e46977fcbe5b71f8bb9df4be.png)
(3)在(2)的条件下,若
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/1ab785be07d4b90f42c992e4d7b2f8c9.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/159ece6e1d45537def7b40aef5083146.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/81dea63b8ce3e51adf66cf7b9982a248.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0a6936d370d6a238a608ca56f87198de.png)
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2019-10-26更新
|
676次组卷
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3卷引用:江西省抚州市南城县第二中学2019-2020学年高一上学期第一次月考数学试题
名校
8 . 对于正整数集合
,如果任意去掉其中一个元素
之后,剩余的所有元素组成的集合都能分为两个交集为空集的集合,且这两个集合的所有元素之和相等,就称集合
为“可分集合”.
(1)判断集合
和
是否是“可分集合”(不必写过程);
(2)求证:五个元素的集合
一定不是“可分集合”;
(3)若集合
是“可分集合”.
①证明:
为奇数;
②求集合
中元素个数的最小值.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a570dbedf552f9d57ec0414e54f3386a.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/62c4392f75c09edaec2e70c9eccb2b85.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5963abe8f421bd99a2aaa94831a951e9.png)
(1)判断集合
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/66b07a67307d5d4627efa688b30e5573.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/38aa0ba6ea6e8f10a2159defda4e67f8.png)
(2)求证:五个元素的集合
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/1752a1d13ec6a233405fce4d5af61d8f.png)
(3)若集合
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a570dbedf552f9d57ec0414e54f3386a.png)
①证明:
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b6a24198bd04c29321ae5dc5a28fe421.png)
②求集合
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5963abe8f421bd99a2aaa94831a951e9.png)
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2019-12-27更新
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574次组卷
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4卷引用:北京市顺义区牛栏山第一中学2019-2020学年高三上学期期中数学试题
北京市顺义区牛栏山第一中学2019-2020学年高三上学期期中数学试题北京市密云区2019-2020学年高一上学期期末数学试题(已下线)第1章《集合》 培优测试卷(二)-2021-2022学年高一数学上册同步培优训练系列(苏教版2019)(已下线)专题05 集合与常用逻辑用语压轴题型汇总-2021-2022学年高一《新题速递·数学》(人教A版2019)
名校
9 . 已知集合
是满足下列性质的函数
的全体:存在实数
,对于定义域内的任意
,均有
成立,称数对
为函数
的“伴随数对”.
(1)判断函数
是否属于集合
,并说明理由;
(2)试证明:假设
为定义在
上的函数,且
,若其“伴随数对”
满足
,求证:
恒成立;
(3)若函数
,求满足条件的函数
的所有“伴随数对”.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ac047e91852b91af639feec23a9598b2.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/09f86f37ec8e15846bd731ab4fcdbacd.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/df7a1aed6c7bf5ad8dc6a9c4071e14e4.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/81dea63b8ce3e51adf66cf7b9982a248.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/99ac5983ac1b8ead75c11f8022018ccb.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/66e58703cf57935d56d4b26cf7102811.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/09f86f37ec8e15846bd731ab4fcdbacd.png)
(1)判断函数
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0b1c079afd1b058adc67a50f48f3d466.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ac047e91852b91af639feec23a9598b2.png)
(2)试证明:假设
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4669810732b633b60dbeaf0bf57204f6.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4aa0df7f1e45f9de29e802c7f19a4f64.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/1e74920f57028200604c2691c8f0fb89.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/66e58703cf57935d56d4b26cf7102811.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/65c9ebe3b38d02c837131394d2c32e15.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f86eff5761f61a20c240a428f2a7ceda.png)
(3)若函数
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/1155e2804263dca432e07cbfea0ffd0f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a813b5adbf5c7082561237894ba6d599.png)
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16-17高一上·上海浦东新·期末
名校
10 . 已知函数
的定义域是
且
,
,当
时,
.
(1)求证:
是奇函数;
(2)求
在区间
上的解析式;
(3)是否存在正整数
,使得当
时,不等式
有解?证明你的结论.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/09f86f37ec8e15846bd731ab4fcdbacd.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/441fbaa15863a0d42b91ff5896615993.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2b568b2cee9ef2a32d2f27305a9104d0.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/55b5235c6b17f7df715ddb87bc8f22f0.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7b7511e6ce72a5232820b7007f976be9.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7bfc8393ba81e6270bbc9173ed2611f0.png)
(1)求证:
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/09f86f37ec8e15846bd731ab4fcdbacd.png)
(2)求
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/09f86f37ec8e15846bd731ab4fcdbacd.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/27f935fa5d0ae1b208aff21aa468ecf8.png)
(3)是否存在正整数
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f0a532e15e232cb4b99a8d4d07c89575.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e77a5ea9148fc86fd3dba77c382965e8.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ad9d3a41e8d26d7e818e754da6bca33f.png)
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