在平面直角坐标系xOy中,点
在抛物线
上.
(1)如果
,那么抛物线的对称轴为直线 ;
(2)如果点A、B在直线
上,求抛物线的表达式和顶点坐标.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b2ee9a0b3113d0d58dbb6884a65d1508.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/9a0d44326c214c7a5ecc3068a29ec96f.png)
(1)如果
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a8cc353b4ec22761cef597ed95b8263f.png)
(2)如果点A、B在直线
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/9e6e15daf7b14dbff32c390f4984dcfb.png)
23-24九年级上·上海杨浦·期末 查看更多[3]
上海市杨浦区2023-2024学年九年级上学期期末模拟数学试题(已下线)专题10 二次函数(十二大题型)-【好题汇编】备战2023-2024学年九年级数学上学期期末真题分类汇编(山东专用)(已下线)专题03 二次函数(三大热点题型)-2024年中考数学毕业班二轮热点题型归纳与变式演练(上海专用)
更新时间:2023-12-08 09:44:16
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解答题-问答题
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容易
(0.94)
名校
【推荐1】在等式
中,
和
为常数,且
;
随
的变化而变化. 已知:当
时,
;当
时,
.
(1)求
、
的值;
(2)求当
时
的值是多少?
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c15fb18163df0690365a0d2e7ee88f5a.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f0a532e15e232cb4b99a8d4d07c89575.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2c94bb12cee76221e13f9ef955b0aab1.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f2c80c26a794a844127aae7dee87c93b.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/639c3d2ff5ee566fcc1b69c65712a661.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c9355031ea0b2dc9cef3777621bc6d38.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e55aa0a20848c37c1892c567b2315e04.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/eefa44964db83759aff6fc8dd7ef8f28.png)
(1)求
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f0a532e15e232cb4b99a8d4d07c89575.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2c94bb12cee76221e13f9ef955b0aab1.png)
(2)求当
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/99c6875d552e9fff3c7d655f3a59b166.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d053b14c8588eee2acbbe44fc37a6886.png)
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解答题-问答题
|
容易
(0.94)
【推荐2】已知
与
成正比例,且当
时,
.
(1)求
与
的函数关系式;
(2)当
时,求
值.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/29788b631dfd1ef16726c4fcb3752ebc.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/81dea63b8ce3e51adf66cf7b9982a248.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/707ea658f3a9359f5740d5aab48f7948.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b8076b511e27939c629762296b8cfd08.png)
(1)求
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d053b14c8588eee2acbbe44fc37a6886.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/81dea63b8ce3e51adf66cf7b9982a248.png)
(2)当
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ba53065eb180a682305fddb95d14b62f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d053b14c8588eee2acbbe44fc37a6886.png)
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解答题-问答题
|
容易
(0.94)
【推荐1】抛物线
过点(0,-5)和(2,1).
(1)求b,c的值;
(2)当x为何值时,y有最大值?
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/58d88bbd34102b55fa928e8ff83f0d52.png)
(1)求b,c的值;
(2)当x为何值时,y有最大值?
您最近一年使用:0次