如图,平面直角坐标系中,已知
,
,
,抛物线
过点
、
,顶点为
,抛物线
过点
,
,顶点为
,若点
在线段
上,则
的值为( )
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a8748dc55e2f45bc37fc4d84d7310f79.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/08ef03f452410ab19c6246567c427178.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/16c9f25703e265026af2d481e64414d5.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a90385c676848de67293e3ed6bc000fe.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5963abe8f421bd99a2aaa94831a951e9.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7f9e8449aad35c5d840a3395ea86df6d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/dad2a36927223bd70f426ba06aea4b45.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e2292dee6a1571257905b4b19a74784c.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5963abe8f421bd99a2aaa94831a951e9.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c5db41a1f31d6baee7c69990811edb9f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/acc290b44635265137fdf13146b6a6d9.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/dad2a36927223bd70f426ba06aea4b45.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/84d454c82d9e52747563d47b68099249.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b17a9ff6766a3883a8ded9b93462edd3.png)
![](https://img.xkw.com/dksih/QBM/editorImg/2023/5/25/110d97a9-ac00-440a-98b4-b8fa992bdfd3.png?resizew=178)
A.![]() | B.![]() | C.![]() | D.![]() |
更新时间:2023-05-21 15:18:04
|
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单选题
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困难
(0.15)
名校
【推荐1】如图是抛物线y1=ax2+bx+c(a≠0)图象的一部分,抛物线的顶点坐标A(1,3),与x轴的一个交点B(4,0),直线y2=mx+n(m≠0)与抛物线交于A,B两点,下列结论:①2a+b=0;②abc>0;③方程ax2+bx+c=3有两个相等的实数根;④抛物线与x轴的另一个交点是(-1,0);⑤当1<x<4时,有y2<y1,其中正确的是( )
![](https://img.xkw.com/dksih/QBM/editorImg/2023/7/18/3a530f1b-e65f-40f4-9fa3-45c3b4ab65d7.png?resizew=176)
A.①④⑤ | B.①③④⑤ | C.①③⑤ | D.①②③ |
您最近一年使用:0次
单选题
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困难
(0.15)
【推荐2】已知二次函数
与x轴交于A,B两点,与y轴交于点C.下列说法正确的是( )
①线段
的长度为
;②抛物线的对称轴为直线
;③P是此抛物线的对称轴上的一个动点,当P点坐标为
时,
的值最大;④若M是x轴上的一个动点,N是此抛物线上的一个动点,如果以A,C,M,N为顶点的四边形是平行四边形,满足条件的M点有4个.
![](https://img.xkw.com/dksih/QBM/2021/2/2/2649322072104960/2649975869816832/STEM/cc806da7-ed53-47d0-af35-ef76f3fa5d75.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d491430a2b1e2ec1b8983f0cabe398ea.png)
①线段
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/60ef95894ceebaf236170e8832dcf7e3.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/07527f73ad63ae4c9787398f76ec79cf.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/3c716601286ac3ef51a4c3c16b12e260.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e9d997da5f73a079453bb90c86f9bcc7.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/358fc84845695e6eb58ffdf82394a16b.png)
![](https://img.xkw.com/dksih/QBM/2021/2/2/2649322072104960/2649975869816832/STEM/cc806da7-ed53-47d0-af35-ef76f3fa5d75.png)
A.①② | B.①②③ | C.①②④ | D.③④ |
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