名校
1 . 已知函数
.
(1)若对任意的
,
恒成立,求实数
的取值范围;
(2)若
的最小值为
,求实数
的值;
(3)若对任意的
,均存在以
,
,
为三边长的三角形,求实数
的取值范围.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2953dcdcd8de718b7b029e8a5f1fea46.png)
(1)若对任意的
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c4166972dec0aa3e8694a44eeb941a08.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/1c73a98c1b3504e09bfbe0db849b0d24.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f0a532e15e232cb4b99a8d4d07c89575.png)
(2)若
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/09f86f37ec8e15846bd731ab4fcdbacd.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/274a9dc37509f01c2606fb3086a46f4f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f0a532e15e232cb4b99a8d4d07c89575.png)
(3)若对任意的
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/bc1593f0b67b98e0a4aac7754f9813ed.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/dc9769116ec47353514e6b7fb7b17216.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/542893790445d6d888d9ff91fd215c9c.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/cb1e5fb2d54a62f243bd5936a3f60386.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f0a532e15e232cb4b99a8d4d07c89575.png)
您最近一年使用:0次
2018-05-05更新
|
3447次组卷
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8卷引用:2019年浙江省普通高中学业水平冲A卷(三)