名校
解题方法
1 . 已知二次函数
满足
,且方程
有两个相等实根.
(1)求
的解析式;
(2)是否存在实数
,使
的定义域是
,值域是
.若存在,求
的值,若不存在,请说明理由.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/6e6c92b3e0d742d9cf65889eb9a08956.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/996b0cc14ecc8acd40fc527231ee7776.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/44b4ac7a4374444e03bb5647ec5ddf52.png)
(1)求
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d8b6894e8c345a035e89ec672503a01f.png)
(2)是否存在实数
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/27f5e7b4b0f3f7ecae9d1eafb412b16b.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d8b6894e8c345a035e89ec672503a01f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/320cba4d29e050a7e9f4e3b24bdbbc86.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/46a5f67701ea5f1d551f20944b2d3669.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/280860dd039e1305a5ccc455f63e8223.png)
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2020-11-28更新
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260次组卷
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2卷引用:湘鄂冀三省益阳平高学校、长沙市平高中学等七校2021-2022学年高一上学期期中联考数学试题