二次函数
(
,
,
是常数,
)的自变量
与函数值
的部分对应值如表:
且当
时,与其对应的函数值
,有下列结论:①
;②
;③
和3是关于
的方程
的两个根;④
.其中,正确结论的个数是( )
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a90385c676848de67293e3ed6bc000fe.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0a6936d370d6a238a608ca56f87198de.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2c94bb12cee76221e13f9ef955b0aab1.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/071a7e733d466949ac935b4b8ee8d183.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/20849c00c47cbdc43f18d53341b6c4e5.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/81dea63b8ce3e51adf66cf7b9982a248.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d053b14c8588eee2acbbe44fc37a6886.png)
… | 0 | 1 | 2 | … | |||
… | … |
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/1c98a7f3a8bf384b1dfc1d34aebd46d2.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/061813f1ec633c5c4c393c4de7938322.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/73c21bd0bd90a89b7ff5ac0eacf612a5.png)
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![](https://staticzujuan.xkw.com/quesimg/Upload/formula/274a9dc37509f01c2606fb3086a46f4f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/81dea63b8ce3e51adf66cf7b9982a248.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ae6b1aae5d2263a96fbfe8c0e6e4ff91.png)
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A.1 | B.2 | C.3 | D.4 |
19-20九年级上·天津河西·期中 查看更多[13]
天津市河西区2019-2020学年九年级上学期期中数学试题人教版2020年九年级上数学 第二十二章 二次函数 专题4 抛物线 与数之间的关系天津市和平区2022-2023学年九年级上学期期中质量调查数学试题2023年安徽省池州市十校联盟中考一模数学试卷天津市南开区美达菲学校2023-2024学年九年级上学期月考数学试题江苏省南通市崇川区2023-2024学年九年级上学期期中数学试题江苏省南通市2023-2024学年九年级上学期期中数学试题辽宁省鞍山市立山区2023-2024学年九年级上学期期中数学试题陕西省西安市滨河学校2023-2024学年九年级下学期开学考试数学试题陕西省西安市高新逸翠园初级中学2023-2024学年九年级上学期第五次模拟数学试题2024年陕西省咸阳市中考数学一模试题2024年山东省济南市高新区中考一模数学模拟试题2024年山东省枣庄市山亭区第二次初中学业水平模拟考试数学试题
更新时间:2024-01-19 23:24:54
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名校
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③点
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