抛物线
(a,b,c是常数),且
,有下列结论:①该抛物线经过点(1,0);②若
,则抛物线经过点(-2,0);③若a,c异号,则抛物线与x轴一定有两个不同的交点;④点
在抛物线上,且
,若
,则
.其中所有正确结论的序号是_________ .
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a90385c676848de67293e3ed6bc000fe.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/9e56f4504e0f80fd031c8b5f41832e03.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/1f22fec5a381ae8aca93d876e54c79de.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/8e3a1467ecf286e3cadaf5aa006606f2.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/396de594dc73318b55be1c921023e088.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/82cfa67eb4998b8b8d08fe4b21f1be60.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2ac67e9a909472ab852d38d2ec66a1e1.png)
更新时间:2022-03-14 10:27:36
|
相似题推荐
填空题
|
较易
(0.85)
【推荐1】如图,抛物线
与
轴交于点
,对称轴为直线
.结合图象分析下列结论:①
;②
;③
;④一元二次方程
的两根分别为
,
.其中正确的结论有________ .
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/8352b2e643a7ce605334f1b0e572bfb0.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/81dea63b8ce3e51adf66cf7b9982a248.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/88c3a2f5b0702ea9fbb9dc8904579737.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/9b384412acba251d87902ab928902f16.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/73c21bd0bd90a89b7ff5ac0eacf612a5.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ad29acf28ab96fb1604e80c743bd738f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/00c98c2fc5fe2dd8f4f5ed2ab6efa99a.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/13fa32c1e926f40a0722d106563777ef.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/754a5a4102094d0fc8a8c16c4fcd9bd4.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ac12f90931435d60f4b6879ab26f7a0b.png)
![](https://img.xkw.com/dksih/QBM/editorImg/2023/9/23/fee76956-bbd1-4b8e-8982-e2cd12e35bce.png?resizew=165)
您最近一年使用:0次
填空题
|
较易
(0.85)
【推荐2】已知二次函数
中a<0,b>0,c<0,则此函数的图象不经过第__ 象限.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a90385c676848de67293e3ed6bc000fe.png)
您最近一年使用:0次
填空题
|
较易
(0.85)
【推荐1】如果抛物线
与x轴有交点,那么a的取值范围是_________ .
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/9c6414db68d06c011eb86e49c2b126be.png)
您最近一年使用:0次
填空题
|
较易
(0.85)
【推荐2】设抛物线
与直线
交于点
,若函数
的图象与x轴只有一个交点,则k与a的关系式为________ .
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c0079e0b643a573c734ddcd2b5fc3235.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0a4cdb8dbf7d863e13bc6152195cadcf.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ec2c85aaf252633e8b2d369985c35aaa.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/845a73eeb5503d7b95dafee8dd0fece8.png)
您最近一年使用:0次