名校
解题方法
1 . 已知函数
的定义域为
,同时满足:对任意
,总有
,对定义域内的
,若满足
,恒有
成立,则函数
称为“
函数”.
(1)判断函数
在区间
上是否为“
函数”,并说明理由;
(2)当
为“
函数”时,求
的最大值和最小值;
(3)已知
为“
函数”:
①证明:
;
②证明:对一切
,都有
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/09f86f37ec8e15846bd731ab4fcdbacd.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e5e7e05d1e0310f00c5dc79864f7b2c2.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/9415ab7474c0b9e1227feeea97fee3d3.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/cba789911020511190b8fbe5a2ede649.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/bff60eab72de85437e12806474281612.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ea2f51cd760aeff9365b51e9a85b41e8.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/8a997ee608605e1009425fddd2012e3f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/09f86f37ec8e15846bd731ab4fcdbacd.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4b454cdb97c408300b50d945f002c2cb.png)
(1)判断函数
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ac3b6d18e5ec745cbe1dccac06031c2c.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e5e7e05d1e0310f00c5dc79864f7b2c2.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4b454cdb97c408300b50d945f002c2cb.png)
(2)当
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4669810732b633b60dbeaf0bf57204f6.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4b454cdb97c408300b50d945f002c2cb.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4669810732b633b60dbeaf0bf57204f6.png)
(3)已知
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a813b5adbf5c7082561237894ba6d599.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4b454cdb97c408300b50d945f002c2cb.png)
①证明:
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/22e4f51bd67ae00f3932415ebeaf7f45.png)
②证明:对一切
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7bab9d44e3cd2fe0cde787831108821d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d134c3a169c988c0770e32b7e336914d.png)
您最近一年使用:0次
名校
2 . 已知函数
,
且满足
.
(1)求实数
的值;
(2)判断函数
在区间
上的单调性,并用单调性的定义证明;
(3)若关于
的方程
有三个不同的实数解,求实数
的取值范围.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/54a5df14b372558f425954557660b220.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/58b140e221ddf537b8964fff8557cca0.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4d12f3cf751822522ba5f88077c1a2e1.png)
(1)求实数
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/294f5ba74cdf695fc9a8a8e52f421328.png)
(2)判断函数
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/942c2141d01bde6b48210c56a17fc75e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/20e8008f21d7907d4d0e7681d3888b89.png)
(3)若关于
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/81dea63b8ce3e51adf66cf7b9982a248.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b4e9793952a28ae090b29eff1bc8f752.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f0a532e15e232cb4b99a8d4d07c89575.png)
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2019-11-14更新
|
325次组卷
|
2卷引用:上海市青浦高级中学2022届高三上学期9月月考数学试题
3 . 已知函数
为奇函数.
(1)求常数
的值;
(2)判断并用定义法证明函数的单调性;
(3)函数
的图象由函数
的图象先向右平移
个单位,再向上平移
个单位得到,写出
的一个对称中心,若
,求
的值.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e440b43aa39952b7bc5dcc8208a7f9a4.png)
(1)求常数
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0a6936d370d6a238a608ca56f87198de.png)
(2)判断并用定义法证明函数的单调性;
(3)函数
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4669810732b633b60dbeaf0bf57204f6.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/09f86f37ec8e15846bd731ab4fcdbacd.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/61128ab996360a038e6e64d82fcba004.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/61128ab996360a038e6e64d82fcba004.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4669810732b633b60dbeaf0bf57204f6.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/13cf87dfb5c61c47bd2379717780f11c.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/eca19f6e3ab5aaadb68f72c32a3b8a63.png)
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2019-10-31更新
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322次组卷
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2卷引用:上海市鲁迅中学2019-2020学年高三上学期9月月考数学试题
4 . 设函数![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4e6de40a885f9e7b345bd497ba8e471d.png)
.
(1)当
时,函数
的图像经过点
,试求
的值,并写出(不必证明)
的单调递减区间;
(2)设
,
,
,若对于任意的
,总存在
,使得
,求实数
的取值范围.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4e6de40a885f9e7b345bd497ba8e471d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/616d488c6b5efa1bea37439bcd619b55.png)
(1)当
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/8e258ab9e600435b37465092243d99f6.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4fe7d5809da02c15a43a0e9a898b9086.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/06a5ea3feeb78559a6af14fb6301f346.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/294f5ba74cdf695fc9a8a8e52f421328.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4fe7d5809da02c15a43a0e9a898b9086.png)
(2)设
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/6b108ab31cc093f03cf48ad65429889e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/714514ae3390d240d25441119c787b88.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e9c0e1afa671a2fc00026bd2bb9749f9.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c17939ee9d41cb5a00ad55df75d87356.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0b17615a18154554cb33f7a95e4c27ba.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/de20b31c77afbccd0c6e74bf9cf34d26.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/294f5ba74cdf695fc9a8a8e52f421328.png)
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2019-08-17更新
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607次组卷
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2卷引用:湖南省邵东县创新实验学校(文复班)高三上学期第二次月考数学(文)试题
名校
5 . 已知f(x)=log4(4x+1)+kx是偶函数.
(1)求k的值;
(2)判断函数y=f(x)-
x在R上的单调性,并加以证明;
(3)设g(x)=log4(a•2x-
a),若函数f(x)与g(x)的图象有且仅有一个交点,求实数a的取值范围.
(1)求k的值;
(2)判断函数y=f(x)-
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/8eff998d034284391ca064755fa6bf1b.png)
(3)设g(x)=log4(a•2x-
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/eb0b6452a3d526d760136e5c8936ba8f.png)
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2019-01-12更新
|
737次组卷
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2卷引用:2020届天津市南开中学高三第一学期数学统练八试题
6 . 对于集合
,
,
,
.集合
中的元素个数记为
.规定:若集合
满足
,则称集合
具有性质
.
(I)已知集合
,
,写出
,
的值;
(II)已知集合
,
为等比数列,
,且公比为
,证明:
具有性质
;
(III)已知
均有性质
,且
,求
的最小值.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0a98a3d1f11a31e9ab1a3dde94c2d58d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/10fa6de6704a7eae1be8382bd77a9c84.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/41665dac89fc1e0e60a0aa25bc76c5e6.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f218b2acb3b60a6fab35b3a6c7da28aa.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5963abe8f421bd99a2aaa94831a951e9.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4978089eb165d2241a35275396794d06.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5963abe8f421bd99a2aaa94831a951e9.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/85bf0b9981913df5204e98aed6da97dc.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5963abe8f421bd99a2aaa94831a951e9.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0b68df477b3ee45ac0f725db00d465a1.png)
(I)已知集合
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/043f3f5b5238b377373c4ab58be2fec6.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/995fd0d9a6f591c8daff9e1cf5a21657.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/85dd02a2390fd78a359972a52b6834e4.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7266cce1ea0848712891db02ed18c45e.png)
(II)已知集合
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0a98a3d1f11a31e9ab1a3dde94c2d58d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/63d471926f7b27322d90c82b9ce21d3d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e9645bd4d2002993b90ec6d48f9c04f7.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/bf31876698721a199c7c53c6b320aa86.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5963abe8f421bd99a2aaa94831a951e9.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0b68df477b3ee45ac0f725db00d465a1.png)
(III)已知
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/01c74a907dda6bb7d9d56d009d9df253.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0b68df477b3ee45ac0f725db00d465a1.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/01c0e5a91adcedbb06079ac61fc82e84.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/48e46f31e6dd0ef18885c3756005b371.png)
您最近一年使用:0次
2019-05-29更新
|
786次组卷
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2卷引用:2019年北京市顺义区牛栏山第一中学高三9月月考数学试题
名校
7 . 已知定义域为
的函数
是奇函数.
(1) 求实数
的值;
(2) 判断并用定义证明该函数在定义域
上的单调性;
(3) 若方程
在
内有解,求实数
的取值范围.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4aa0df7f1e45f9de29e802c7f19a4f64.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c3a57b630d87c5cfb32adaa9c9988eed.png)
(1) 求实数
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0a6936d370d6a238a608ca56f87198de.png)
(2) 判断并用定义证明该函数在定义域
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4aa0df7f1e45f9de29e802c7f19a4f64.png)
(3) 若方程
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/23d55b5bf522c94b99543ea4afaefd3f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5eb9a1e46a4402d837f6305dd4a12322.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2c94bb12cee76221e13f9ef955b0aab1.png)
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2018-12-04更新
|
1251次组卷
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6卷引用:上海师范大学附属中学2022届高三上学期9月练习数学试题
8 .
对定义在区间
上的函数
,若存在闭区间
和常数
,使得对任意的
都有
,且对任意的
都有
恒成立,则称函数
为区间
上的“U型”函数.
(1)求证:函数
是
上的“U型”函数;
(2)设
是(1)中的“U型”函数,若不等式
对一切的
恒成立,求实数
的取值范围;
(3)若函数
是区间
上的“U型”函数,求实数
和
的值.
对定义在区间
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/8455657dde27aabe6adb7b188e031c11.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4fe7d5809da02c15a43a0e9a898b9086.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7d0195f699765021e2c6ea985e487971.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c5db41a1f31d6baee7c69990811edb9f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e207cf62e3a7e282eac4c4a3455bbf9a.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b07c7e023ba28d62dcfce2ab19d50fe2.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a27b9f3a57bec1a3feb51618153b09f8.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/50d89d823cea442681c2f8c6c663bb03.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4fe7d5809da02c15a43a0e9a898b9086.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/8455657dde27aabe6adb7b188e031c11.png)
(1)求证:函数
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e4007a40afd892ea32e4c15c5c5297dc.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4aa0df7f1e45f9de29e802c7f19a4f64.png)
(2)设
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4fe7d5809da02c15a43a0e9a898b9086.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/faa87c59a2c329dd42acdda454cd3a2b.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c4166972dec0aa3e8694a44eeb941a08.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/36a1b09c653185842513e24ebba60bb3.png)
(3)若函数
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/46bf94f9a3b0a0cc75158b6073ffc9eb.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/3a2fd8a1544c5e16a6762bf799af9210.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/294f5ba74cdf695fc9a8a8e52f421328.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b6a24198bd04c29321ae5dc5a28fe421.png)
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2019-01-30更新
|
429次组卷
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5卷引用:上海市向明中学2018-2019学年高三上学期第一次月考数学试题
上海市向明中学2018-2019学年高三上学期第一次月考数学试题上海市零陵中学2022届高三上学期10月月考数学试题(已下线)2012届上海市徐汇区高三第一学期学习能力诊断卷理科数学上海市第二中学2017届高三上学期期中数学试题上海市上海交通大学附属中学2017-2018学年高一上学期12月月考数学试题
名校
9 . 已知
是定义在
上的奇函数,且
,若
且
时,有
成立.
(1)判断
在
上的单调性,并用定义证明;
(2)解不等式
;
(3)若
对所有的
恒成立,求实数
的取值范围.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/09f86f37ec8e15846bd731ab4fcdbacd.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/9d188ec2580e273ce87e51653a2177ee.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/249a976e88133f3b3733f09137cf5c42.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ee139625a4db25ec63b966206436eb2f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/96bc2eeaca8a8ce4bcce2bff011a11bf.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/71b84952d33957e5b90d8cd3b3bcc127.png)
(1)判断
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/09f86f37ec8e15846bd731ab4fcdbacd.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/9d188ec2580e273ce87e51653a2177ee.png)
(2)解不等式
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b63adedc645ec99e52a2afb25b6ff21e.png)
(3)若
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/02d27c15224a9da71896c890d381fbce.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ec25b9d7ca47b780a744c2ebbf31d925.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/294f5ba74cdf695fc9a8a8e52f421328.png)
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2018-11-02更新
|
1917次组卷
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8卷引用:新疆新源县第二中学2022届高三上学期第一次月考数学(理)试题
新疆新源县第二中学2022届高三上学期第一次月考数学(理)试题【全国百强校】广东省华南师范大学附属中学2018-2019学年高一上学期数学必修一(B组)测试题【全国百强校】广东省广州市华南师大附中2018-2019学年高一(上)10月月考数学试题(B卷)吉林省长春市十一高中、白城一中2017-2018学年高一上学期第一次月考联考数学试题安徽省滁州市定远县民族中学2020-2021学年高一上学期11月月考数学试题湖南省邵东市创新学校2023-2024学年高一上学期2024级特训班第一次月考数学试题2016-2017学年安徽六安一中高一上国庆作业一数学试卷福建省厦门市六中2019-2020学年高一上学期期中数学试题
名校
10 . 已知函数
.
(1)若
,求函数
的所有零点;
(2)若
,证明函数
不存在的极值.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f0393723753a4e7e3adc747332798c99.png)
(1)若
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/200f24e682c93e02a87f3f9d57dc5d40.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4fe7d5809da02c15a43a0e9a898b9086.png)
(2)若
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/1c67a7e28dba059006021a2e2105f538.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4fe7d5809da02c15a43a0e9a898b9086.png)
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2019-04-28更新
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11卷引用:2020届湖南省长沙市雅礼中学高三第5次月考数学(文)试题
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