名校
1 . 已知一元二次方程
有两个实数根
,
,且
,则
的可能值为( )
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b1659b617254c9a665df31c3fc0eec2d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c814128ea2139e33db94ea590e7c2223.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/aec19b68e3add9d5bfcc6269a1855b87.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/419ec5d454874483f6483ce9aaec59b0.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/294f5ba74cdf695fc9a8a8e52f421328.png)
A.![]() | B.![]() | C.![]() | D.![]() |
您最近一年使用:0次
2023-08-23更新
|
821次组卷
|
6卷引用:贵州省黄平县且兰高级中学2024届高三上学期第一次月考数学试题
解题方法
2 . 若
的零点个数为
,求
的值( )
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/07b6aaf76a4497235b5a5f5499e01581.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/bdaa19de263700a15fcf213d64a8cd57.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2c94bb12cee76221e13f9ef955b0aab1.png)
A.![]() | B.![]() | C.![]() | D.![]() ![]() |
您最近一年使用:0次
名校
3 . 已知函数
.
(1)若
对任意实数
都成立,求实数
的取值范围;
(2)若关于
的方程
有两个实数解,求实数
的取值范围.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/fa2f6ca1a8665a5de503c66cf2b12bf3.png)
(1)若
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a308a25e0202f799ecd2117527da7aa0.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/81dea63b8ce3e51adf66cf7b9982a248.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/294f5ba74cdf695fc9a8a8e52f421328.png)
(2)若关于
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/81dea63b8ce3e51adf66cf7b9982a248.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d6c85057aab5f4896e994267cdc6b747.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f0a532e15e232cb4b99a8d4d07c89575.png)
您最近一年使用:0次
2019-12-28更新
|
1553次组卷
|
8卷引用:贵州省黔东南苗族侗族自治州东南州名校2019-2020学年高一上学期期中数学试题
名校
4 . 定义:如果函数
的导函数为
,在区间
上存在
,
使得
,
,则称
为区间
上的“双中值函数“
已知函数
是
上的“双中值函数“,则实数m的取值范围是
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/987517758fad59f6f695761deb2a5ebd.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d479a86a1711709b2d100fe4daf3e7cf.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/3d2437d40a85a950a06b1824312ddfd0.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b0eb7f0759565b9d36008d49b627583a.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/040135d64192de075ba0cc9f11ddbc9a.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/fe47997f78ae446cfb2896078363d905.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/573439e006be202bfb4e5c17d1b1db64.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a3dc1fd02d378a333465caa0375a30cf.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d479a86a1711709b2d100fe4daf3e7cf.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b0eb7f0759565b9d36008d49b627583a.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c90282d4a37c9a20620d4bbb0c263cae.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b7595947ea0fca8895824f547aff1799.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/422f50cbfa9dafb8fafeadd8a5f81aeb.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/11d71379442f28c038d367d49422cf90.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/987517758fad59f6f695761deb2a5ebd.png)
A.![]() | B.![]() | C.![]() | D.![]() |
您最近一年使用:0次
2019-03-16更新
|
846次组卷
|
6卷引用:【全国百强校】贵州省凯里市第一中学2018届高三下学期《黄金卷》第四套模拟考试数学(理)试题