解题方法
1 . 对勾函数是形如
的函数,其中
为自变量,是一种类似于反比例函数的一般双曲函数,因其图象而得名.已知对勾函数
,在区间
上的单调性是:在区间
上单调递减,在区间
上单调递增.
(1)若对勾函数
,根据函数单调性的定义证明
在区间
上单调递增;
(2)若对勾函数
,写出函数
的单调区间(不必证明)并作出函数
的图象.
(3)已知对勾函数
,
,二次函数
,设
的最大值为
,若
,
,求实数
的取值范围
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5065e3752520c590c3a11ff6652414b8.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/81dea63b8ce3e51adf66cf7b9982a248.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c7f83756e1e8819ec9eb554270e888be.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d562dc22dfb3b81d0c3f88b54d063c2f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c5adca923811433f158d3803d509c309.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f744a9b5e1bddc40e04714012f9f10e7.png)
(1)若对勾函数
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/fe5effb3053cf609f59178641cd48167.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/09f86f37ec8e15846bd731ab4fcdbacd.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/cda591d3909af06eabf6b37c65bfe571.png)
(2)若对勾函数
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/fe5effb3053cf609f59178641cd48167.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/09f86f37ec8e15846bd731ab4fcdbacd.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/09f86f37ec8e15846bd731ab4fcdbacd.png)
![](https://img.xkw.com/dksih/QBM/editorImg/2023/12/19/fca4d273-fb02-4da3-a82a-fc4a00becf09.png?resizew=240)
(3)已知对勾函数
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/98e29a631e052d3a682b025e512f0618.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2f0d68648b10fce54dfc19c5ee60086d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/70b72b368ce2f42afe01303bf99bd3e0.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4669810732b633b60dbeaf0bf57204f6.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ac047e91852b91af639feec23a9598b2.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/6422b9c2e93a91fe9e39ce4d9dabb0fc.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/cd5ac54a99b60c157af732e05972c837.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f0a532e15e232cb4b99a8d4d07c89575.png)
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名校
解题方法
2 . 函数
,
(1)解关于
的不等式
;
(2)若
,
①若
,求证
;
②画出
的图象.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ec5ee992e4d7904e80e246a908fe9051.png)
(1)解关于
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/81dea63b8ce3e51adf66cf7b9982a248.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/018857ec6e498113b3b12a730d9313da.png)
(2)若
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5e342b2932a0414a3221e961c0e116aa.png)
①若
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/764f981a79d9850e2fd2afb79940da50.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f0e297f6897dec36236986df208904d9.png)
②画出
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/6a1cfb60420ff7e72c1b9d64f69ae063.png)
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名校
解题方法
3 . 已知两个变量
且
满足关系式
,且
是
的函数.
![](https://img.xkw.com/dksih/QBM/editorImg/2023/1/18/fb160dbb-e69a-4e91-ba11-b9b90fbd9f18.png?resizew=168)
(1)写出该函数的表达式
,值域和单调区间(不必证明);
(2)在坐标系中画出该函数的图象(直接作图,不必写过程及理由).
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/656d649176f38261805ad14bb1066216.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/33a0e656a2de8d47b9001cc32b1316eb.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/1e6b3feb5aad6b9d53cb432532681d27.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d053b14c8588eee2acbbe44fc37a6886.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/81dea63b8ce3e51adf66cf7b9982a248.png)
![](https://img.xkw.com/dksih/QBM/editorImg/2023/1/18/fb160dbb-e69a-4e91-ba11-b9b90fbd9f18.png?resizew=168)
(1)写出该函数的表达式
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/942c2141d01bde6b48210c56a17fc75e.png)
(2)在坐标系中画出该函数的图象(直接作图,不必写过程及理由).
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解题方法
4 . 函数
,被称为狄利克雷函数,其中
为实数集,
为有理数集.
![](https://img.xkw.com/dksih/QBM/editorImg/2023/2/26/567b0412-b11e-4e6b-9be3-2a7d4d5f2602.png?resizew=204)
(1)判断
的奇偶性,并证明;
(2)设
是定义域为
的奇函数,当
时,
,画出
的图像,并根据图象写出
的单调区间及零点.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/06f15945e5fa788b076edf86fbf3e42b.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/cf3ed15aa3dcc4211fb520b5b942c989.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/316ecb1589c3cc179e2f62507020771e.png)
![](https://img.xkw.com/dksih/QBM/editorImg/2023/2/26/567b0412-b11e-4e6b-9be3-2a7d4d5f2602.png?resizew=204)
(1)判断
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b2f5a719332bc8af83fbe70fa6cf632d.png)
(2)设
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4fe7d5809da02c15a43a0e9a898b9086.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/cf3ed15aa3dcc4211fb520b5b942c989.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a6e2e79843faf62dde86bf858d1e0569.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f440b7118356ed74fc494ed27a91191c.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/51c530f4b7491b95acb8ce3eef9aa09d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/51c530f4b7491b95acb8ce3eef9aa09d.png)
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名校
解题方法
5 . 已知函数
满足
,函数
是
上单调递增的一次函数,且满足
.
![](https://img.xkw.com/dksih/QBM/editorImg/2022/10/23/6ce63b98-53d2-429f-8456-4d507c4a0850.png?resizew=265)
(1)证明:
,
;
(2)已知函数
,
①画出函数
的图像;
②若
且
,
,
互不相等时,求
的取值范围.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/09f86f37ec8e15846bd731ab4fcdbacd.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f9f6b132b0f8a8ce00642f297ab0e7a0.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4669810732b633b60dbeaf0bf57204f6.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/339b85cca0100adc23472c143f9a5a89.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b4191aed4e079966f89c12cc54a4dbbb.png)
![](https://img.xkw.com/dksih/QBM/editorImg/2022/10/23/6ce63b98-53d2-429f-8456-4d507c4a0850.png?resizew=265)
(1)证明:
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7e5cb16179eee83ee4c01f1bd9b8371d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2ee737b76b747390c423bec199aaf37c.png)
(2)已知函数
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/9e6e9e3ca0b965ebe07a3e11d7f2933b.png)
①画出函数
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a813b5adbf5c7082561237894ba6d599.png)
②若
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/059d89c7d892826f42b6fc9b8f7f903b.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4887473a8091e1ef53a169cc9f211e3a.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f2fdeba282b028321696be7f90f2cbfe.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a3aa688caadfeb5bdf9c7dfecb5afa31.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/acb14e2fe3859d5aecf636054ee65d77.png)
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2022-10-20更新
|
677次组卷
|
3卷引用:福建省厦门第六中学2022-2023学年高一上学期阶段性检测数学试题
真题
解题方法
6 . 已知函数
(m为实数).
(1)m是什么数值时,y的极值是0?
(2)求证:不论m是什么数值,函数图象(即抛物线)的顶点都在同一条直线
上,画出
时抛物线的草图,来检验这个结论;
(3)平行于
的直线中,哪些与抛物线相交,哪些不相交?求证:任一条平行于
而与抛物线相交的直线,被各抛物线截出的线段都相等.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/47f1f56318611a08499fc2cfb95cf496.png)
(1)m是什么数值时,y的极值是0?
(2)求证:不论m是什么数值,函数图象(即抛物线)的顶点都在同一条直线
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/172722d11ea7e01411fa06dbb82f46ee.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4ead73563d6232c0eea7ebd494ba3068.png)
(3)平行于
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/172722d11ea7e01411fa06dbb82f46ee.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/172722d11ea7e01411fa06dbb82f46ee.png)
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