已知函数
.
(1)若关于
的不等式
有解,求实数
的取值范围;
(2)若不等式
对任意
成立,求实数
的取值范围.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b30f3938c438ab74413f2cefec12f01b.png)
(1)若关于
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/81dea63b8ce3e51adf66cf7b9982a248.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5efbe27501ebed775a665de0ee88a7d8.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0a6936d370d6a238a608ca56f87198de.png)
(2)若不等式
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/6f09114512f1cec153a0920192d144f9.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c4166972dec0aa3e8694a44eeb941a08.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/294f5ba74cdf695fc9a8a8e52f421328.png)
更新时间:2020-06-30 22:50:27
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【推荐1】选修4—5:不等式选讲
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![](https://staticzujuan.xkw.com/quesimg/Upload/formula/6b108ab31cc093f03cf48ad65429889e.png)
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名校
解题方法
【推荐2】已知函数
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![](https://staticzujuan.xkw.com/quesimg/Upload/formula/23a686da2abc91f69dd0405b8e315f3e.png)
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![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4b7376dbe3af5f7132e15d0457ac4ac2.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d1e56f6161c5ed4feb04e057a14c1975.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0a6936d370d6a238a608ca56f87198de.png)
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