二次函数
的图像如图所示,其对称轴为
,与
轴负半轴的交点为
,则下列结论正确的是( )
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/8352b2e643a7ce605334f1b0e572bfb0.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/9b384412acba251d87902ab928902f16.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/81dea63b8ce3e51adf66cf7b9982a248.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c086ad713c068ffbe83b3dfa47987eba.png)
![](https://img.xkw.com/dksih/QBM/editorImg/2023/2/22/7f7d5214-1b22-4de8-8de3-bcb35c0e834b.png?resizew=152)
A.![]() | B.一元二次方程![]() |
C.![]() | D. ![]() |
更新时间:2020-04-25 17:45:23
|
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【推荐1】某二次函数图象如图所示,下面各式判断正确的是( )
![](https://img.xkw.com/dksih/QBM/editorImg/2023/12/28/8784a08b-ec08-4716-a482-e519d7fbd2f9.png?resizew=106)
![](https://img.xkw.com/dksih/QBM/editorImg/2023/12/28/8784a08b-ec08-4716-a482-e519d7fbd2f9.png?resizew=106)
A.![]() | B.![]() |
C.方程![]() | D.![]() |
您最近一年使用:0次
单选题
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较易
(0.85)
【推荐2】二次函数
的图象如图所示,下列结论正确的是()
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a90385c676848de67293e3ed6bc000fe.png)
![](https://img.xkw.com/dksih/QBM/editorImg/2023/11/27/12778b63-f9dc-4f14-af0c-65709974407f.png?resizew=158)
A.![]() | B.![]() |
C.![]() | D.![]() |
您最近一年使用:0次
单选题
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较易
(0.85)
【推荐1】函数
的图象如图所示,那么关于x的方程
的根的情况是( )
![](https://img.xkw.com/dksih/QBM/2021/10/3/2821614266122240/2821883287224320/STEM/d3b0f5c1-2753-4c01-893c-cc57d72ff7f1.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a90385c676848de67293e3ed6bc000fe.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/96900bad6bfca4efce6f297c5b6a33d8.png)
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A.有两个不相等的实数根 | B.有两个异号实数根 |
C.有两个相等的实数根 | D.无实数根 |
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名校
【推荐2】二次函数
的部分图象如图所示,图象经过点
,对称轴为直线
,下列结论:①
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;③若点
、点
、点
在该函数图象上,则
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的两根为
和
,且
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![](https://img.xkw.com/dksih/QBM/2021/12/28/2882316298493952/2886613523570688/STEM/1de419c8-85fa-47d5-8834-9c5c0043d346.png?resizew=189)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4fe6337d68cd5653767e3a1889b8b2e3.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/bc6554ac3dff4a59833e407db887f6e6.png)
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A.![]() | B.![]() | C.![]() | D.![]() |
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