已知二次函数
的图象如图所示,有以下4个结论:(1)
;(2)
;(3)
;(4)
.其中正确的结论有( )
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/8352b2e643a7ce605334f1b0e572bfb0.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/94440d3e4c073f94f2b266ff99d50e74.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/67ca5fd57c2c2fcc3c7a574fdd1467d9.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/8cec12441802f71e803efaf2c62ee588.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4630bb948780be53bc73d9ddef875000.png)
![](https://img.xkw.com/dksih/QBM/editorImg/2023/6/10/eb12b7c4-1f8d-4025-b711-819b359f0872.png?resizew=237)
A.1个 | B.2个 | C.3个 | D.4个 |
更新时间:2023-06-01 17:26:38
|
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【推荐1】如图,观察二次函数
的图象,下列结论:
①
②
,③
,④
.其中结论正确的个数是( )
![](https://img.xkw.com/dksih/QBM/2020/4/15/2442160217882624/2442629992349696/STEM/5eb5b10707c940259764b17cfc4419ce.png?resizew=178)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a90385c676848de67293e3ed6bc000fe.png)
①
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/12e7ef804eeb23618fbf91ead47587f2.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/94cbc6fbdb7a42c4f3f63ce6424e2eab.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4630bb948780be53bc73d9ddef875000.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/30f2e8b5365c2f086a02e5dd3c3bd116.png)
![](https://img.xkw.com/dksih/QBM/2020/4/15/2442160217882624/2442629992349696/STEM/5eb5b10707c940259764b17cfc4419ce.png?resizew=178)
A.1 | B.2 | C.3 | D.4 |
您最近一年使用:0次
单选题
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较易
(0.85)
【推荐2】已知二次函数
下列说法:①其图像的开口向下;②其图像的对称轴为直线x=-6;③其图像顶点坐标为(6,3);④当x<6时,y随x的增大而减小.则其中说法正确的有
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/1ed3a7ddcf44cdd775ce56c443aa1db8.png)
A.1个 | B.2个 | C.3个 | D.4个 |
您最近一年使用:0次
单选题
|
较易
(0.85)
【推荐1】二次函数
的图象如图所示.有下列结论:①
;②
;③
;④
.其中正确的是( )
![](https://img.xkw.com/dksih/QBM/2021/12/28/2889276565413888/2904344751349760/STEM/72f1d77caca34c19b7092de986fab277.png?resizew=163)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/8352b2e643a7ce605334f1b0e572bfb0.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c9deb79d044a379f31a8fc57736d7ead.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/39d5f0d374837655cc286d326305da36.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c766352f0be38b719621052de92615bd.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/15e8ebd1d7fc0e20a1de79ed02516e7c.png)
![](https://img.xkw.com/dksih/QBM/2021/12/28/2889276565413888/2904344751349760/STEM/72f1d77caca34c19b7092de986fab277.png?resizew=163)
A.①② | B.②③ | C.②④ | D.③④ |
您最近一年使用:0次
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【推荐2】关于二次函数
的图象与性质中,不正确的是( )
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/17d794141572c8b1e70957754f32b9eb.png)
A.开口向上 | B.对称轴为![]() |
C.y随x的增大而增大 | D.与x轴有交点 |
您最近一年使用:0次