已知关于
的二次函数
的图象开口向下,
与
的部分对应值如下表所示:
下列判断,①
;②
;③方程
有两个不相等的实数根;
④若
,则
,正确的是________________ (填写正确答案的序号) .
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/81dea63b8ce3e51adf66cf7b9982a248.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a90385c676848de67293e3ed6bc000fe.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d053b14c8588eee2acbbe44fc37a6886.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/81dea63b8ce3e51adf66cf7b9982a248.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/73c21bd0bd90a89b7ff5ac0eacf612a5.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/fb1beec07792cbfc2f46de2aa151c5d6.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f2ecb3525f68f1011c671a4a230bc9a3.png)
④若
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/12b894738a0c1d7e580df8ad1161fe4f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/1932c00b61c73304e605ea1375e70867.png)
2020·辽宁葫芦岛·三模 查看更多[4]
2020年辽宁省葫芦岛市连山区九年级下学期三模数学试题浙江省绍兴市锡麟中学2020-2021学年九年级10月调研数学试题(已下线)第22章 二次函数【B卷】-2021-2022学年九年级数学上册同步必刷基础拓展单元卷(人教版)湖北省武汉市洪山区2020-2021学年九年级下学期月考数学试题
更新时间:2020-05-07 19:21:09
|
【知识点】 根据二次函数的图象判断式子符号解读
相似题推荐
填空题
|
较易
(0.85)
真题
名校
【推荐1】如图,二次函数
的图象与正比例函数
的图象相交于A,B两点,已知点A的横坐标为
,点B的横坐标为2,二次函数图象的对称轴是直线
.下列结论:①
;②
;③关于x的方程
的两根为
,
;④
.其中正确的是______ .(只填写序号)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a90385c676848de67293e3ed6bc000fe.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ac02a054bd0771a56987af33454baaea.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/6dbf80cb71406fd14621139149f7ed9e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ef00713e73b8357cc7900144f5505bc6.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/77694c11ba40ec5c2fc4f6a05e31a048.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2f1ab69f172831110597ca8210bfaa09.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/1400e9b863128908b637f290f07db95d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d3e17ff0a5e5605747c4c6d9f7bb5165.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/204e5160ff110a19878e4fae639319e4.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4ceba95c52939d00b45aee695511d318.png)
您最近一年使用:0次
填空题
|
较易
(0.85)
名校
【推荐2】如图,已知二次函数
的图象与x轴交于点
,与y轴的交点B在
和
之间(不包括这两点),对称轴为直线
.下列结论:①
;②
;③
;④
;⑤
.其中正确结论有______ (填写所有正确结论的序号).
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/8352b2e643a7ce605334f1b0e572bfb0.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a0929421a6188c3122442866b0b85a5e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/1803dc3c76fd2b51696647aa18602412.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/edaef66a0582e95fb5c57a405acdea9a.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/3f71de76bc6760aeff986ec42fc761dd.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ea4e112fa3f0203666503fb979fab562.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/46196aec06c25d5c8f9b1d3a8f50a889.png)
![](https://img.xkw.com/dksih/QBM/editorImg/2023/12/20/f3c8ac38-fbee-47d8-b73a-456f998ae46e.png?resizew=142)
您最近一年使用:0次