名校
解题方法
1 . 已知函数
是二次函数,不等式
的解集为
,且
在区间
上的最小值是4
(1)求
的解析式;
(2)求
在
上的最大值
的解析式;
(3)设
,若对任意
,
均成立,求实数
的取值范围.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4fe7d5809da02c15a43a0e9a898b9086.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/22e38c541dec8fce1d26886e5ef7d21f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ac9c64ba837387d640de4b8e2191b1b5.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4fe7d5809da02c15a43a0e9a898b9086.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/9d188ec2580e273ce87e51653a2177ee.png)
(1)求
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4fe7d5809da02c15a43a0e9a898b9086.png)
(2)求
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4fe7d5809da02c15a43a0e9a898b9086.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/9ae3777d65a4e4a642c6772a1870c8b9.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/9e93815f534a9ba003799aef2a53a242.png)
(3)设
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/80e1a5283725107b93faef861eaed0d1.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5ded8bbf5d077fa0055c7e4aa419b849.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e8a50697dedb12e93033bcfb76e71384.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/294f5ba74cdf695fc9a8a8e52f421328.png)
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2020-12-03更新
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8卷引用:2022年天津市河东区普通高中学业水平合格考试数学模拟试题