22-23高一上·全国·期中
解题方法
1 . 已知实数
,函数![](https://staticzujuan.xkw.com/quesimg/Upload/formula/25d22dc62231c3c69c551cd0ea8a851b.png)
(1)若函数
在区间
上存在最小值,求
的取值范围
(2)对于函数
,若存在区间
,使
,求
的取值范围,并写出满足条件的所有区间
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/94440d3e4c073f94f2b266ff99d50e74.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/25d22dc62231c3c69c551cd0ea8a851b.png)
(1)若函数
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/09f86f37ec8e15846bd731ab4fcdbacd.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/1cbf366b1443d8e86fb09d57c63b5f48.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2c94bb12cee76221e13f9ef955b0aab1.png)
(2)对于函数
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/09f86f37ec8e15846bd731ab4fcdbacd.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/1e8785cc08ee9db82c13f9876984f1f7.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/cf8dc719f018358459c8a9db6b71f3c7.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0a6936d370d6a238a608ca56f87198de.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/57b85a97933a1d984f6e484b4021c800.png)
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