如图,直线
是二次函数
的图解的对称轴,则下列结论:①
;②
;③
;④
;⑤
,
,
是指抛物线的三点,则
,正确的是( )
![](https://img.xkw.com/dksih/QBM/editorImg/2023/12/16/43389629-eb97-4eeb-b03d-0bf9dd9ab166.png?resizew=170)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/9b384412acba251d87902ab928902f16.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/8352b2e643a7ce605334f1b0e572bfb0.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/73c21bd0bd90a89b7ff5ac0eacf612a5.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/608b47f4f37ab10c00f0b2f8f3b65ff6.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/da04f641c850a75a63031d5aed2e0625.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ad29acf28ab96fb1604e80c743bd738f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b335385838979e1744cb32542004c04f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b3316464faa4c460d8ea308c194667a9.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/db0384936d8c1cf6e657aeda8a1ff893.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ef8d40d399903921b346bac20cb97e4a.png)
![](https://img.xkw.com/dksih/QBM/editorImg/2023/12/16/43389629-eb97-4eeb-b03d-0bf9dd9ab166.png?resizew=170)
A.②③⑤ | B.②④⑤ | C.③④ | D.①④ |
更新时间:2023-12-16 22:05:56
|
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
;⑥
其中正确结论的个数是( )
![](https://img.xkw.com/dksih/QBM/editorImg/2024/3/7/8a91ac79-647e-49f8-9fd9-3d8b5f16a78d.png?resizew=155)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4fe6337d68cd5653767e3a1889b8b2e3.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/da68ff94b0877adb96abbc3e0fa52d86.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/73c21bd0bd90a89b7ff5ac0eacf612a5.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5c5469918fc2803d9d5b2951b3296fa4.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4630bb948780be53bc73d9ddef875000.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/da04f641c850a75a63031d5aed2e0625.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/8c3b303bb3cc45bad2fd2a76babcc746.png)
![](https://img.xkw.com/dksih/QBM/editorImg/2024/3/7/8a91ac79-647e-49f8-9fd9-3d8b5f16a78d.png?resizew=155)
A.2 | B.3 | C.4 | D.5 |
您最近一年使用:0次
单选题
|
适中
(0.65)
【推荐2】如图,抛物线
的对称轴是直线
,并与x轴交于A,B两点,若
,则下列结论:①
;②
;③
;④若m为任意实数,则
,其中正确的结论有( )
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/fcc90b02a4cd1425aabfc192b1cdee17.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/639c3d2ff5ee566fcc1b69c65712a661.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/463319053d27fdb1185bf14fa9e72cc5.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/77694c11ba40ec5c2fc4f6a05e31a048.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c7b56f11bd12e08455935f576b1f803a.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/bbd4c6ef86162f9fe2a065af87f28ac8.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/231282a60e9b336c79fa57552674b0c0.png)
![](https://img.xkw.com/dksih/QBM/editorImg/2024/2/14/d6b5ccd7-685b-4ef5-8f5b-875e788d168c.png?resizew=116)
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1】二次函数y=ax2+bx+c(a≠0)部分大致图象如图所示,对称轴为直线x=1,与x轴一个交点为(3,0),结合图象,下列说法错误的是( )
![](https://img.xkw.com/dksih/QBM/2022/2/18/2918907350032384/2919069201162240/STEM/d9ad3837-3495-4ed5-a1bd-edbfde054501.png?resizew=160)
![](https://img.xkw.com/dksih/QBM/2022/2/18/2918907350032384/2919069201162240/STEM/d9ad3837-3495-4ed5-a1bd-edbfde054501.png?resizew=160)
A.abc>0 | B.2a+b=0 |
C.a+c>0 | D.一元二次方方程ax2+bx+c=2有两个不相等的实数解 |
您最近一年使用:0次
单选题
|
适中
(0.65)
【推荐2】如图,抛物线
过点
,且对称轴为直线
,有下列结论:①
;②
;③抛物线经过点
与点
.则
;④无论
取何值,抛物线都经过同一个点
;⑤
,其中所有正确的结论是( )
![](https://img.xkw.com/dksih/QBM/2020/7/6/2500037978071040/2500553698017281/STEM/78422804-8c8b-46e0-a026-9cec3ba61024.png?resizew=133)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a90385c676848de67293e3ed6bc000fe.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/72480c8fae3dc057229a7958e9daed74.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/9b384412acba251d87902ab928902f16.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/16de2d7f06346a0fc6b5d6822e746237.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/cadacfd10bd4203d626560981beec1cd.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b6b18a8fdf06348b5b22817edb71664e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/6b3faf58b9880990c3bc4b42b150a978.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/25f99df1a7b58018125b99578b779342.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/76f0649064a085fb74c997fb507a9b6d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b27b7d8e0e83a54bf9f54a1cf703e354.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/93a980e70903f6de5611a2bcf32c0144.png)
![](https://img.xkw.com/dksih/QBM/2020/7/6/2500037978071040/2500553698017281/STEM/78422804-8c8b-46e0-a026-9cec3ba61024.png?resizew=133)
A.4个 | B.3个 | C.2个 | D.1个 |
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轴的负半轴交于点A,B(点A在点B的右边),与y轴的正半轴交于点C,且
,则下列关系中正确的是( )
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a90385c676848de67293e3ed6bc000fe.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/9478ce548bd9305baf2a81c6e354a7cb.png)
![](https://img.xkw.com/dksih/QBM/editorImg/2023/11/5/c403f8ce-6b17-47cb-aa1a-5fbedcdb16bb.jpg?resizew=152)
A.![]() | B. ![]() | C. ![]() | D. ![]() |
您最近一年使用:0次
单选题
|
适中
(0.65)
名校
【推荐2】抛物线y=ax2+bx+c的对称轴是直线x=﹣1,且过点(1,0),顶点位于第二象限,其部分图象如图所示,给出以下判断:①ab>0且c<0;②4a﹣2b+c>0;③8a+c>0;④c=3a﹣3b;⑤直线y=2x+2与抛物线y=ax2+bx+c两个交点的横坐标分别为
,
,则
其中正确的选项是( )
![](https://img.xkw.com/dksih/QBM/2021/12/1/2862911149826048/2863730010595328/STEM/f2808ebef5c94f6f92e565ba899274ea.png?resizew=198)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c814128ea2139e33db94ea590e7c2223.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/aec19b68e3add9d5bfcc6269a1855b87.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4ee6f24b78bc2455558d9d4fc992ae00.png)
![](https://img.xkw.com/dksih/QBM/2021/12/1/2862911149826048/2863730010595328/STEM/f2808ebef5c94f6f92e565ba899274ea.png?resizew=198)
A.①③ | B.①②④ | C.②④⑤ | D.②③④⑤ |
您最近一年使用:0次