解题方法
1 . 已知函数
.
(1)若存在
,使得不等式
成立,求m的取值范围;
(2)若
的解集为
,求
的最大值.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b8d6c5e12ae81612d7d240be36c7e592.png)
(1)若存在
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/538193a4717d564c01145e82314c2d1a.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/1dc9ede2e55724383dd1093fc7fcdb59.png)
(2)若
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7a7447c6de952578385a75f9b27d230a.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/30277e0be448b4955903e81e8795e45d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/685f83d101d3b64e03f92c3a6df3cd4f.png)
您最近一年使用:0次
2 . 已知函数
的最小值为
.
(1)求
的值;
(2)记关于
的不等式:
的解集为
,若“
”是“
”的必要不充分条件,求实数
的取值范围.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/6fc32294cb0597ecea6ba0324d38557d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/294f5ba74cdf695fc9a8a8e52f421328.png)
(1)求
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/294f5ba74cdf695fc9a8a8e52f421328.png)
(2)记关于
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/81dea63b8ce3e51adf66cf7b9982a248.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/3c6b2e11b8e7268d01aa142ef670cda0.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5963abe8f421bd99a2aaa94831a951e9.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/9d504513bac1d1b2bb28330b2aa06f80.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/6ed006b944ea64f970fee46e2f558467.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0a6936d370d6a238a608ca56f87198de.png)
您最近一年使用:0次
3 . (1)已知关于
的不等式
的解集为
,求实数
的取值范围
(2)求
的值域.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/81dea63b8ce3e51adf66cf7b9982a248.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4a0c27c573ece9d1790d3103b7e99377.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4aa0df7f1e45f9de29e802c7f19a4f64.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0a6936d370d6a238a608ca56f87198de.png)
(2)求
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ce79ab40505825983ee8df8bf7bd2d70.png)
您最近一年使用:0次