抛物线
的顶点为
,与x轴的一个交点A在点
和
之间,其部分图像如图所示,则以下结论其中正确的是( )
![](https://img.xkw.com/dksih/QBM/editorImg/2023/5/22/3847dd0c-5aa5-4545-ba0c-9dd841231d37.png?resizew=181)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0c7e6ee128bec0ed241b260fa340c9ab.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/dcc3ce1d01d31ca481c3e52863012d5d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/dcbcd0aebdd8bd688d108834747009f5.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/bd243fab0af865af67a2ab817e909cf5.png)
![](https://img.xkw.com/dksih/QBM/editorImg/2023/5/22/3847dd0c-5aa5-4545-ba0c-9dd841231d37.png?resizew=181)
A.![]() |
B.若方程![]() ![]() |
C.![]() |
D.若点![]() ![]() ![]() ![]() |
更新时间:2023-05-10 11:19:00
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【推荐1】如图,抛物线y=ax2+bx+c的对称轴是x=1,下列结论:①abc>0;②b2﹣4ac>0; ③8a+c<0; ④5a+b+2c>0,正确的是( )
![](https://img.xkw.com/dksih/QBM/editorImg/2022/11/26/f80e087d-fbae-4263-ad7a-b750252d3315.png?resizew=204)
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【推荐2】如图,二次函数
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【推荐1】如图为二次函数
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单选题
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【推荐2】二次函数y=ax2+bx+c(a≠0)的图象如图,给出下列四个结论:①4ac﹣b2<0;②4a+c<2b;③3b+2c<0;④m(am+b)+b<a(m≠﹣1),其中正确结论的个数是( )
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