如图,已知抛物线
的对称轴是
,直线
轴,且交抛物线于点
,下列结论错误 的是( )
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2a9553fb9beb9ed49ea5f7a0f077884d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/99c6875d552e9fff3c7d655f3a59b166.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/11fc01344af3800a30595b9403086516.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/1325c6fe42a9e5c04520d8a9bb6821b8.png)
A.![]() | B.若实数![]() ![]() |
C.![]() | D.当![]() ![]() |
2022·广西梧州·中考真题 查看更多[11]
2022年广西梧州市中考数学真题(已下线)专题22.43 二次函数中考真题专练(巩固篇)(专项练习)-2022-2023学年九年级数学上册基础知识专项讲练(人教版)福建省厦门市第九中学2022-2023学年九年级上学期适应性数学试卷(10月份)(已下线)第22章 二次函数(基础、常考、易错、压轴)分类专项训练-2022-2023学年九年级数学考试满分全攻略(人教版)山东省烟台市福山区2022-2023学年九年级上学期期中数学试题(已下线)专题2.49 二次函数中考真题专练(巩固篇)(专项练习)-2022-2023学年九年级数学下册基础知识专项讲练(北师大版)2023年广东省东莞市初中学业水平考试数学模拟试卷(二)湖北省咸宁市、黄冈市联考2023-2024学年九年级上学期期中数学试题黑龙江省大庆市2023-2024学年九年级上学期期中数学试题(已下线)清单02二次函数(14个考点梳理+题型解读+核心素养提升+中考聚焦)-2023-2024学年九年级数学上学期期末考点大串讲(人教版)2024年山东省曲阜市中考一模考试数学试题
更新时间:2022-06-28 13:19:00
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【推荐1】如图,已知抛物线
,直线
,当x任取一值时,x对应的函数值分别为
.若
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,记
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时,
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![](https://img.xkw.com/dksih/QBM/2019/12/20/2359324565725184/2359354133159936/STEM/ca02525ee8574c7a9b4741437c48a05d.png?resizew=130)
①当
时,
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或
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![](https://staticzujuan.xkw.com/quesimg/Upload/formula/66620538ada3b703ae7ed51d4b05cefe.png)
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![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7404d4aa0f0bcfe7ebf45d3eeab3cdb6.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/1292c47f62023b747f1a4bd615c75284.png)
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①当
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/08115d6d9f876dea921a4d32260ff1fb.png)
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A.①②③ | B.①④ | C.②③④ | D.③④ |
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【推荐2】若二次函数
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A.![]() | B.![]() | C.![]() | D.![]() |
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名校
【推荐1】如图,已知抛物线
的对称轴为直线x=1,且过点
给出下列结论:①
;②
;③
;④
.其中,正确的结论有( )
![](https://img.xkw.com/dksih/QBM/editorImg/2022/11/16/c2a729bf-1110-4ef6-8558-6d2963e7b5f8.png?resizew=129)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a90385c676848de67293e3ed6bc000fe.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/88c3a2f5b0702ea9fbb9dc8904579737.png)
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![](https://staticzujuan.xkw.com/quesimg/Upload/formula/33ecda7bfb0a2043306bf7707a136ad0.png)
![](https://img.xkw.com/dksih/QBM/editorImg/2022/11/16/c2a729bf-1110-4ef6-8558-6d2963e7b5f8.png?resizew=129)
A.1个 | B.2个 | C.3个 | D.4个 |
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【推荐2】二次函数
图象如图,下列正确的个数为( )
![](https://img.xkw.com/dksih/QBM/editorImg/2022/9/19/bc013a77-293a-444e-a23e-aad3cbdb5046.png?resizew=149)
①
;②
;③
;④
有两个解m,n,当
时,
,
;⑤当
时,y随x增大而减小.
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![](https://img.xkw.com/dksih/QBM/editorImg/2022/9/19/bc013a77-293a-444e-a23e-aad3cbdb5046.png?resizew=149)
①
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A.2 | B.3 | C.4 | D.5 |
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【推荐1】抛物线
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,
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A.![]() |
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C.![]() |
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您最近一年使用:0次