1 . 已知函数
.
(1)求函数
在
上的最小值
的表达式;
(2)若函数
在
上有且只有一个零点,求
的取值范围.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7e3b13370ab63e46a60b31fabc973f1c.png)
(1)求函数
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/09f86f37ec8e15846bd731ab4fcdbacd.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/9e11f4ca0e7ace69f92130d0525bcdb3.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/01b3ae7e5228fd1acb0d46f6941143a7.png)
(2)若函数
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/09f86f37ec8e15846bd731ab4fcdbacd.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/9e11f4ca0e7ace69f92130d0525bcdb3.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0a6936d370d6a238a608ca56f87198de.png)
您最近一年使用:0次
解题方法
2 . 设函数
是定义在
上的偶函数,对任意
,都有
,且当
时,
,若在区间
内关于
的方程
恰有三个不同的实数根,则
的取值范围是( )
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/09f86f37ec8e15846bd731ab4fcdbacd.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4aa0df7f1e45f9de29e802c7f19a4f64.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c4166972dec0aa3e8694a44eeb941a08.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/3170408d3830e3eecd4fc0ecf5aaffb3.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/54297d09c19f29d92463d21928998266.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a243bea3f4299af8c894dc19ad878f6e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c875f29cf3499a0f38f8c5219eb074ac.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/81dea63b8ce3e51adf66cf7b9982a248.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/72b4a81a14a12363535523a582510b16.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0a6936d370d6a238a608ca56f87198de.png)
A.![]() | B.![]() | C.![]() | D.![]() |
您最近一年使用:0次
2020-03-19更新
|
192次组卷
|
2卷引用:湖北省仙桃市田家炳实验高级中学2023-2024学年高三上学期8月月考数学试题
3 . 已知函数
,
,
.
(1)若函数
在区间
上有唯一零点,求实数m的取值范围.
(2)记函数
,若函数
存在零点,求实数m的取值范围.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/36ebffe614537abfecac7db0f557bdca.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c4166972dec0aa3e8694a44eeb941a08.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2725a89d93c791f7a0098f4964587905.png)
(1)若函数
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4fe7d5809da02c15a43a0e9a898b9086.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ed18bd80c6c4142f68e89f4ad44570b5.png)
(2)记函数
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/bffb0fdb8406971b3a461d737aafc7aa.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/61c388166862b3ccfcc7ca749ebe5949.png)
您最近一年使用:0次
4 . 已知函数
有三个零点![](https://staticzujuan.xkw.com/quesimg/Upload/formula/261c0899711077922ca479c99ffe2fef.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/87b968823edce2368203562f6ac28f1f.png)
,则
( )
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f9bc48cd9a62cfa1dd08e298444fcd24.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/261c0899711077922ca479c99ffe2fef.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/87b968823edce2368203562f6ac28f1f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/291c25fc6a69d6d0ccfb8d839b9b4462.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c83e590fa0b13ad3e9c9756642ef53a3.png)
A.7 | B.8 | C.15 | D.16 |
您最近一年使用:0次
名校
5 . 已知
是偶函数.
(1)求
的值;
(2)若函数
的图象与直线
有公共点,求a的取值范围.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/8d45ce861f515be2c57877c945c40bb0.png)
(1)求
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f0a532e15e232cb4b99a8d4d07c89575.png)
(2)若函数
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/942c2141d01bde6b48210c56a17fc75e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/19a16a128d07b4d4232f79d013c14ad2.png)
您最近一年使用:0次
2020-02-06更新
|
903次组卷
|
6卷引用:湖北省武汉市第十四中学2021-2022学年高一上学期12月月考数学试题
名校
6 . 已知函数
,
.
(1)若函数
在区间
上存在零点,求实数
的取值范围;
(2)当
时,若对任意的
、
,
恒成立,求实数
的取值范围;
(3)若函数
在
上的值城为区间
,是否存在常数
,使得区间
的长度为
?若存在,求出
的值;若不存在,请说明理由.(注:区间
的长度为
).
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/3aedf65c061060c0d865844cdcf63d7a.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/38e8ce643acadd5f70608af26ad94dd4.png)
(1)若函数
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/942c2141d01bde6b48210c56a17fc75e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/9d188ec2580e273ce87e51653a2177ee.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0a6936d370d6a238a608ca56f87198de.png)
(2)当
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/3b4d795709b0abcf47bceec2250f2f9b.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c814128ea2139e33db94ea590e7c2223.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/17641d15644d5fb2c79fd1016b21520f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/032e8dc00cdc96860c9cbf8ac09677fc.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/294f5ba74cdf695fc9a8a8e52f421328.png)
(3)若函数
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/942c2141d01bde6b48210c56a17fc75e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/584996a9966931cc08ed88370768668d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/8455657dde27aabe6adb7b188e031c11.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/36a1b09c653185842513e24ebba60bb3.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/8455657dde27aabe6adb7b188e031c11.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2b0507d73ad6e1fafcedfdf678478430.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/36a1b09c653185842513e24ebba60bb3.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/be35b4d8f52e8f440297683c3178e22e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/701fce58a3087d253fd4fa948030eb50.png)
您最近一年使用:0次
2020-02-04更新
|
349次组卷
|
2卷引用:湖北省宜昌市一中、恩施高中2018-2019学年高一上学期末联考数学试题
名校
7 . 已知方程
的实根
满足
,则
的取值范围为( )
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/dda5c43f7ae2cc4435956a4cc95b5417.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/79b752f0f189e5d8666daea73e145dff.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/155c7f573e898da225390202da1767e7.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f0a532e15e232cb4b99a8d4d07c89575.png)
A.![]() | B.![]() |
C.![]() | D.![]() ![]() |
您最近一年使用:0次
2020-02-04更新
|
286次组卷
|
3卷引用:湖北省宜昌市一中、恩施高中2018-2019学年高一上学期末联考数学试题
8 . 已知函数
,
,将函数
图象先向右平移
个单位长度,再向上平移
个单位长度,得到函数
的图象.
(1)分别求函数
与
的解析式;
(2)设函数
,若
有零点,求实数
的取值范围.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/53f74c250a03c9d2d80b7928626d4371.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/790daaa89fc9d093f45023becf765697.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/942c2141d01bde6b48210c56a17fc75e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/bdaa19de263700a15fcf213d64a8cd57.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/bdaa19de263700a15fcf213d64a8cd57.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/1938c093dd2fbcb752d0eb7a18d143b2.png)
(1)分别求函数
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/09f86f37ec8e15846bd731ab4fcdbacd.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4669810732b633b60dbeaf0bf57204f6.png)
(2)设函数
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5b9d682980c5b3c112416f6d8e88aeae.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a813b5adbf5c7082561237894ba6d599.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/294f5ba74cdf695fc9a8a8e52f421328.png)
您最近一年使用:0次
名校
9 . 已知函数
,关于
的方程
有
个不等的实数根,则
的取值范围是
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ddd7d47e48c25557bbe3aaa1da6ca14a.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/81dea63b8ce3e51adf66cf7b9982a248.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/41376c7d805e9c93141e070492a8bca5.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/cd3304e23f3b0f9569c4140ca89b6498.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0a6936d370d6a238a608ca56f87198de.png)
A.![]() | B.![]() | C.![]() | D.![]() |
您最近一年使用:0次
2020-01-16更新
|
410次组卷
|
2卷引用:湖北省荆门市2019-2020学年高一上学期期末数学试题
名校
10 . 已知函数
为偶函数.
(1)求
的值;
(2)若方程
有解,求实数
的范围.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2f65f8ff950d3897f914c96abac10195.png)
(1)求
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f0a532e15e232cb4b99a8d4d07c89575.png)
(2)若方程
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/92bbbdb96dc993e9fccc588abcb5356c.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/294f5ba74cdf695fc9a8a8e52f421328.png)
您最近一年使用:0次
2020-01-15更新
|
533次组卷
|
4卷引用:湖北省武汉市武昌区2019-2020学年高一上学期期末数学试题