二次函数
的图象如图所示,下列结论中正确的是( )
![](https://img.xkw.com/dksih/QBM/editorImg/2024/3/8/65358aeb-6b90-4d57-903e-03e3cfd00903.png?resizew=197)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a90385c676848de67293e3ed6bc000fe.png)
![](https://img.xkw.com/dksih/QBM/editorImg/2024/3/8/65358aeb-6b90-4d57-903e-03e3cfd00903.png?resizew=197)
A.![]() | B.当![]() ![]() | C.![]() | D.![]() |
更新时间:2024-03-08 22:23:28
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相似题推荐
单选题
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适中
(0.65)
【推荐1】将抛物线
向上平移
个单位后,得到的图象不经过第四象限,则
的值可能是( )
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a437199cc9e500eb64ee50b504de5ae3.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/294f5ba74cdf695fc9a8a8e52f421328.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/294f5ba74cdf695fc9a8a8e52f421328.png)
A.1 | B.3 | C.5 | D.7 |
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(0.65)
名校
【推荐2】顶点坐标为(﹣2,3),开口方向和大小与抛物线
相同的抛物线为( )
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/aafae84e7fe39dc5b694c39405201d32.png)
A.![]() | B.![]() |
C.![]() | D.![]() |
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适中
(0.65)
【推荐1】若函数y=ax+bc的图象如图所示,则有可能是函数y=ax2+bx+c的大致图象的是( )
![](https://img.xkw.com/dksih/QBM/2020/10/29/2581535832850432/2587357388308480/STEM/9059bda658294d33b75c0512f48ab440.png?resizew=79)
![](https://img.xkw.com/dksih/QBM/2020/10/29/2581535832850432/2587357388308480/STEM/9059bda658294d33b75c0512f48ab440.png?resizew=79)
A.![]() | B.![]() |
C.![]() | D.![]() |
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【推荐2】如图,已知抛物线
(
为常数,
)经过点
,且对称轴为直线
,其中正确结论有( )
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a90385c676848de67293e3ed6bc000fe.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/76f0649064a085fb74c997fb507a9b6d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/20849c00c47cbdc43f18d53341b6c4e5.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a812a9b58ccba331cfd21d244329af01.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b650820d7bed48ed67a2869ad8c65ff1.png)
A.![]() | B.![]() |
C.![]() ![]() ![]() | D.当![]() ![]() ![]() |
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【推荐1】二次函数y=a
+bx+c(a≠0)的图象如图所示,给出下列结论:①4ac﹣
<0;②2a+b<0;③4a﹣2b+c=0;④a:b:c=﹣1:2:3,其中正确的是( )
![](https://img.xkw.com/dksih/QBM/editorImg/2022/10/13/3bbbcd42-dae7-4a12-a1c6-a0c52bf0a73f.png?resizew=213)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/9b0a89e3c30f6e4d4c5db4378b05d987.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a881309775c3b6a9f4ed408838666342.png)
![](https://img.xkw.com/dksih/QBM/editorImg/2022/10/13/3bbbcd42-dae7-4a12-a1c6-a0c52bf0a73f.png?resizew=213)
A.①② | B.②③ | C.③④ | D.①④ |
您最近一年使用:0次
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【推荐2】如图,已知抛物线
(a,b,c为常数,
)经过点
,且对称轴为直线
,有下列结论:
①
;②
;③
;④无论a,b,c取何值,抛物线一定经过
;⑤
.其中正确结论有( )
![](https://img.xkw.com/dksih/QBM/2022/4/8/2953714910707712/2956612209025024/STEM/47a1d843-c227-4469-bf1b-5a475290ba61.png?resizew=133)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a90385c676848de67293e3ed6bc000fe.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/20849c00c47cbdc43f18d53341b6c4e5.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/bd243fab0af865af67a2ab817e909cf5.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/1c98a7f3a8bf384b1dfc1d34aebd46d2.png)
①
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/16de2d7f06346a0fc6b5d6822e746237.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/33ecda7bfb0a2043306bf7707a136ad0.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/9981434e2863b1d444887c9bd3172aa5.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/21a952264c57fdbf69ada018edd1556c.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7640b9d6c1de713989a5e5b9d3738204.png)
![](https://img.xkw.com/dksih/QBM/2022/4/8/2953714910707712/2956612209025024/STEM/47a1d843-c227-4469-bf1b-5a475290ba61.png?resizew=133)
A.1个 | B.2个 | C.3个 | D.4个 |
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