名校
解题方法
1 . 已知二次函数
满足
,对任意
,都有
恒成立.
(1)求
的值;
(2)求函数
的解析式;
(3)若
,对于实数
,
,记函数
在区间
上的最小值为
,且
恒成立,求实数
的取值范围.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/331d5e308cd5469e0f28a8d75f79903f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/9f5704be464d81a1c74c626bb4752f75.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/24a57996290794e082b21d8f1dfc322a.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/85560576afe8bb49a2602627fadac766.png)
(1)求
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7ce6155e181e21ce56ea658b70f8af17.png)
(2)求函数
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/09f86f37ec8e15846bd731ab4fcdbacd.png)
(3)若
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a37eaa0ec458506a1aed06a4ff1e94ff.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/294f5ba74cdf695fc9a8a8e52f421328.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4b7be44ca0e13ea8dabdd6488c8c00c1.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4669810732b633b60dbeaf0bf57204f6.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f654715c118853fd957b6b9624e5a82c.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a8d5408842cf8095d3b0a4e1bef10226.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/8a6647f1052e97beb3e3885181ca038c.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/df64046e91b047037f19e4032e3b6de3.png)
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2022-11-29更新
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5卷引用:吉林省长春市朝阳区吉大附中实验学校2023-2024学年高一上学期期中数学试题