名校
1 . 已知函数
,
,若对任意的
时,不等式
恒成立,则实数
的取值范围是__________ .
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/3ebd3fa8daf11eb494fef73e38fef1e8.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b0eac2b31a19918895e5af2d316490e7.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/734a6de235c7c5205eb3d81109f04abf.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/20dbdd22a98c3e442a17bfc8416e6956.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/36a1b09c653185842513e24ebba60bb3.png)
您最近一年使用:0次
2 . 已知二次函数
的图象经过原点,函数
是偶函数,方程
有两相等实根.
(1)求
的解析式;
(2)若对任意
,
恒成立,求实数
的取值范围;
(3)若函数
与
的图像有且只有一个公共点,求实数
的取值范围.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/942c2141d01bde6b48210c56a17fc75e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0e81e15b871dd32b2438ef8025bcc42d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0369099d128586f54e7d566a5cdc5686.png)
(1)求
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/942c2141d01bde6b48210c56a17fc75e.png)
(2)若对任意
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/62a9797b81d7e93fef31805acd40b50c.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f880f254c348630f3760d03108758555.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/294f5ba74cdf695fc9a8a8e52f421328.png)
(3)若函数
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/bc24766b2d89af71596bbe810446e389.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/6b0484d27f1b01463b2682897bbc1e73.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0a6936d370d6a238a608ca56f87198de.png)
您最近一年使用:0次
2018-02-04更新
|
1199次组卷
|
2卷引用:广西桂林市2017-2018学年高一上学期期末考试数学试题