抛物线
(对称轴为
)的图象如图所示,下列四个判断中正确的是( )
![](https://img.xkw.com/dksih/QBM/2019/4/17/2184362615832576/2184409596649472/STEM/831165cc967b492f839d22ca96a844c3.png?resizew=108)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a90385c676848de67293e3ed6bc000fe.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/9b384412acba251d87902ab928902f16.png)
![](https://img.xkw.com/dksih/QBM/2019/4/17/2184362615832576/2184409596649472/STEM/831165cc967b492f839d22ca96a844c3.png?resizew=108)
A.![]() ![]() ![]() | B.![]() |
C.![]() | D.![]() |
更新时间:2019-05-05 20:06:14
|
相似题推荐
单选题
|
适中
(0.65)
【推荐1】已知二次函数
的图象如图所示,有下列结论:
①
;
②
;
③
;
④
;
⑤
(m是任意实数).
其中正确的是( )
![](https://img.xkw.com/dksih/QBM/editorImg/2023/11/18/c3081716-6f00-48de-86fb-63bec4889462.png?resizew=156)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/8352b2e643a7ce605334f1b0e572bfb0.png)
①
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/73c21bd0bd90a89b7ff5ac0eacf612a5.png)
②
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/aa285de4d015f208441ffe9a84bbd780.png)
③
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/661d5d8b2344d1ad2b7bf1490b16191b.png)
④
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a395a7795e783b4596bef9775d02ed6f.png)
⑤
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0f8f1b58ebcb6caea25fea71bfbccd1d.png)
其中正确的是( )
![](https://img.xkw.com/dksih/QBM/editorImg/2023/11/18/c3081716-6f00-48de-86fb-63bec4889462.png?resizew=156)
A.①②③ | B.①②④ | C.②③④ | D.③⑤ |
您最近一年使用:0次
单选题
|
适中
(0.65)
【推荐2】已知二次函数的图象与x轴的一个交点坐标为
,对称轴为直线
.下列结论中:①
;②若点
,
,
均在该二次函数图象上,则
;③若m为任意实数,则
;④方程
的两实数根为
,
,且
,则
,
、正确结论的序号为( )
A.①②③ | B.①③④ | C.①②④ | D.②③④ |
您最近一年使用:0次
单选题
|
适中
(0.65)
【推荐1】如图,抛物线
与x轴的一个交点坐标为
,抛物线的对称轴为直线
,下列结论:①
;②
;③
;④
和
是抛物线上的两点,则有
.其中结论正确的个数是( )
![](https://img.xkw.com/dksih/QBM/editorImg/2023/3/22/8282eb4b-902c-4e35-87bc-de57952a49e2.png?resizew=130)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/8352b2e643a7ce605334f1b0e572bfb0.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b5d1b0e316f658f4ffe056511101614d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/9b384412acba251d87902ab928902f16.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/302942f4319f4e7e70ce3d9c6c3cc956.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/94cbc6fbdb7a42c4f3f63ce6424e2eab.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/6817588761f7853439d049f77b929565.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f3521a395e5fd8c18f83bfc6290d66f0.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/60a7254d151a993df310188222112eae.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/25f99df1a7b58018125b99578b779342.png)
![](https://img.xkw.com/dksih/QBM/editorImg/2023/3/22/8282eb4b-902c-4e35-87bc-de57952a49e2.png?resizew=130)
A.1个 | B.2个 | C.3个 | D.4个 |
您最近一年使用:0次
单选题
|
适中
(0.65)
【推荐2】二次函数
的图象如图所示,以下结论:①
;②
;③
;④其顶点坐标为
;⑤当
时,y随x的增大而减小;⑥
中正确的有( )
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a90385c676848de67293e3ed6bc000fe.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/73c21bd0bd90a89b7ff5ac0eacf612a5.png)
![](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/c2c42b3b9c454abbea59f1a0523151a5.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/9e541ea2f855f981c96207070683d388.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e120a296f2192bcde712d2840003f8f0.png)
A.3个 | B.4个 | C.5个 | D.6个 |
您最近一年使用:0次