二次函数
的对称轴是( )
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/12bd6a8ebe4b708851dec94d70fdcfb5.png)
A.直线![]() | B.直线![]() | C.直线![]() | D.直线![]() |
更新时间:2023-04-11 01:03:44
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【知识点】 y=ax²+bx+c的图象与性质解读
相似题推荐
单选题
|
较易
(0.85)
【推荐1】若二次函数y=ax2﹣4ax+c的图象经过点(﹣1,0),则方程ax2﹣4ax+c=0的解为( )
A.x1=﹣1,x2=﹣5 | B.x1=5,x2=1 |
C.x1=﹣1,x2=5 | D.x1=1,x2=﹣5 |
您最近一年使用:0次
单选题
|
较易
(0.85)
【推荐2】如图,是二次函数
(a,b,c是常数,
)图象的一部分,与x 轴的一 交点在点
和
之间,对称轴是直线
.对于下列说法:①
;②
;③
;④
;⑤
.其中正确的是( )
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/eedbc6a62ae39a95af2a3f679ae0d04a.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/20849c00c47cbdc43f18d53341b6c4e5.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2574683d63cd4450e9f9853f7483093c.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/53e2fb818b15dcd2e3a548e23d39502a.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/9b384412acba251d87902ab928902f16.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/39d5f0d374837655cc286d326305da36.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/aa285de4d015f208441ffe9a84bbd780.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/8cec12441802f71e803efaf2c62ee588.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/12e7ef804eeb23618fbf91ead47587f2.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c9deb79d044a379f31a8fc57736d7ead.png)
A.①②④ | B.①②⑤ | C.②③④ | D.③④⑤ |
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