二次函数
的图像经过四个点
.若![](https://staticzujuan.xkw.com/quesimg/Upload/formula/46f6872ffb1934339c53c2c2282d5889.png)
,则
的取值范围为( )
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/22e59da5115d0dafea24822245f92c48.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/95d440f61379547384c84ffb1b34bbab.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/46f6872ffb1934339c53c2c2282d5889.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/966ac1af0651a68a9ee730ae8177ab56.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/46f6872ffb1934339c53c2c2282d5889.png)
A.![]() | B.![]() | C.![]() | D.![]() |
更新时间:2024-05-11 15:41:06
|
相似题推荐
单选题
|
适中
(0.65)
【推荐1】不等式组
的解集在数轴上表示正确的是( )
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2c0018c77bd722fe37749429d76b72c4.png)
A.![]() | B.![]() |
C.![]() | D.![]() |
您最近一年使用:0次
单选题
|
适中
(0.65)
【推荐2】不等式组的解集在数轴上表示如图所示,则该不等式组可能为( )
![](https://img.xkw.com/dksih/QBM/editorImg/2022/11/13/13c801ca-cef7-4636-9274-73e256045c4f.png?resizew=221)
![](https://img.xkw.com/dksih/QBM/editorImg/2022/11/13/13c801ca-cef7-4636-9274-73e256045c4f.png?resizew=221)
A.![]() | B.![]() |
C.![]() | D.![]() |
您最近一年使用:0次
单选题
|
适中
(0.65)
【推荐1】已知抛物线![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a90385c676848de67293e3ed6bc000fe.png)
的对称轴为直线
,与
轴的一个交点为
,且
,则下列结论:①
,
;②
;③
;④
.其中正确的命题有( )个.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a90385c676848de67293e3ed6bc000fe.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ab9cd3690e7aa3debb1ed054a9f622da.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/99c6875d552e9fff3c7d655f3a59b166.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/81dea63b8ce3e51adf66cf7b9982a248.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c9df2062940530232ab124a571e951ed.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f4d5b159da139b50cde0d087f462aa4d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/67ca5fd57c2c2fcc3c7a574fdd1467d9.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f75807858b7804a1ad2039c41f323a18.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/da68ff94b0877adb96abbc3e0fa52d86.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4d5556dd86322752a457b3a6ba979c80.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/bdcab205212d1a85ee3af7adb95ce043.png)
A.1 | B.2 | C.3 | D.4 |
您最近一年使用:0次
单选题
|
适中
(0.65)
【推荐2】抛物线
上部分点的横坐标
,纵坐标
的对应值如下表:
小聪观察上表,得出下面结论:①抛物线与x轴的一个交点为(3,0); ②函数
的最大值为6;③抛物线的对称轴是
;④在对称轴左侧,y随x增大而增大.其中正确的有( )
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a90385c676848de67293e3ed6bc000fe.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/81dea63b8ce3e51adf66cf7b9982a248.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d053b14c8588eee2acbbe44fc37a6886.png)
x | … | -2 | -1 | 0 | 1 | 2 | … |
y | … | 0 | 4 | 6 | 6 | 4 | … |
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a90385c676848de67293e3ed6bc000fe.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b650820d7bed48ed67a2869ad8c65ff1.png)
A.①② | B.①③ | C.①②③ | D.①③④ |
您最近一年使用:0次