解下列一元二次不等式
(1)
;
(2)
;
(3)
(1)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/18f8675be2bff3a93388dad29f6a17fd.png)
(2)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7436cf2e64f40ea5f5a79e8a143dab6e.png)
(3)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b9d53d7eed2abd35f16c47413bfbdd81.png)
21-22高一上·全国·课前预习 查看更多[1]
(已下线)2.3 二次函数与一元二次方程、不等式(基础知识+基本题型)--【一堂好课】2021-2022学年高一数学上学期同步精品课堂(人教A版2019必修第一册)
更新时间:2022-03-15 10:48:20
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【知识点】 解不含参数的一元二次不等式解读
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解答题-问答题
|
较易
(0.85)
解题方法
【推荐2】已知函数
,
是二次函数,且满足
,
.
(1)求
,
的解析式;
(2)设
,求不等式
的解集.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e86bc3765cfca3eb1574533fcc71a711.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/be1ce3f01e2b6364f9a9fdaf197d5e29.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b1a12e8846f97c02867fc9e149d0ef51.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/97076dfe314060b14496b2610f427c53.png)
(1)求
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4fe7d5809da02c15a43a0e9a898b9086.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/be1ce3f01e2b6364f9a9fdaf197d5e29.png)
(2)设
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b84b458bcffa52e4664cbe549b734cb1.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e5a70c607bdaad9a21a2825e59931084.png)
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