如图1,在平面直角坐标系中,抛物线L:
的顶点D的坐标为
,与x轴相交于A、
两点,交y轴点C.
(1)求抛物线L的解析式;
(2)如图2,连接
,求证:
;
(3)若P是抛物线上的任意一点(不与点C重合),点P的横坐标为m,抛物线上点C与点P之间的部分(包含端点)记为图象K,当m符合什么条件时,图象K的最大值与最小值的差为1?
(4)如将(1)中求得的抛物线的解析式的中的c项改为未知字母m,点
是经过图1中点A、C的直线上一点,则当若抛物线L与线段
只有一个交点,直接写出m的取值范围.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a90385c676848de67293e3ed6bc000fe.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c8156a557d9b963a77dfd88178789ac7.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f55d12701014cf53071093e8739d089b.png)
![](https://img.xkw.com/dksih/QBM/editorImg/2023/6/1/ae1acb60-20e5-43a7-a812-ba15d6a4075b.png?resizew=367)
(1)求抛物线L的解析式;
(2)如图2,连接
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/080e74610ba415061dda7aa5f345e3e6.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/3f99ee5488beee3d86d7d499dd77602d.png)
(3)若P是抛物线上的任意一点(不与点C重合),点P的横坐标为m,抛物线上点C与点P之间的部分(包含端点)记为图象K,当m符合什么条件时,图象K的最大值与最小值的差为1?
(4)如将(1)中求得的抛物线的解析式的中的c项改为未知字母m,点
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/6f7bffc3d5bdd2a4b11995e0bf0bec1c.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/68a83fdd2ba72a2dba0b6b10bb3e06b9.png)
2023·河北·模拟预测 查看更多[1]
更新时间:2023-05-26 18:46:33
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解答题-问答题
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【推荐1】如图,已知抛物线
与x轴交于A、
两点,与y轴交于点C.
(1)求抛物线的表达式;
(2)当
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【推荐2】如图,抛物线
过
两点,交y轴于点C,连接
.
![](https://img.xkw.com/dksih/QBM/editorImg/2022/12/13/67ba5245-2506-4a8c-8bde-be598c942dfc.png?resizew=196)
(1)求该抛物线的解析式和对称轴;
(2)点D是抛物线对称轴上一动点,当
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(1)求该抛物线的解析式和对称轴;
(2)点D是抛物线对称轴上一动点,当
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【推荐1】如图,抛物线
与x轴交于点A,B,与y轴交于点C,点
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![](https://img.xkw.com/dksih/QBM/editorImg/2023/1/3/9d96901e-79c1-4929-9097-7f8c1946998e.png?resizew=195)
(1)求抛物线的解析式及点A,B的坐标;
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![](https://staticzujuan.xkw.com/quesimg/Upload/formula/88ce7d0a5ce12f9690aecc5ed6f3b11e.png)
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【推荐2】有这样一个问题:探究函数
的图象与性质,小静根据学习函数的经验,对函数
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![](https://staticzujuan.xkw.com/quesimg/Upload/formula/01bf243a3e5478565cabdd49903785c7.png)
(1)函数
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/01bf243a3e5478565cabdd49903785c7.png)
(2)下表是y与x的几组对应值.
![]() | … | -1 | 0 | 1 | ![]() | ![]() | 3 | 4 | … |
![]() | … | ![]() | ![]() | 1 | 4 | m | 1 | ![]() | … |
表中的m=__________;
(3)如图,在平面直角坐标系xOy中,描出以上表中各对对应值为坐标的点,根据描出的点画出该函数的图象;
![](https://img.xkw.com/dksih/QBM/2017/5/23/1693260437921792/1694624831807488/STEM/c4513277cb1e488c9a2feed3304ec024.png?resizew=260)
(4)结合函数图象,写出一条该函数图象的性质:____________________________.
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【推荐1】在平面直角坐标系
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【推荐2】在平面直角坐标系
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解答题-证明题
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【推荐1】如图,
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(2)若
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解答题-证明题
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【推荐2】如图,平行四边形
中,
是
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;
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的面积为
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的面积.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/411b38a18046fea8e9fab1f9f9b80a5f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2a30f3a8b673cc28bd90c50cf1a35281.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/9d78abbad68bbbf12af10cd40ef4c353.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/85c4bdfb0db1e31e8459df1d15f9ab55.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/03902478df1a55bc99703210bccab910.png)
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![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5c525e0682103065f1ab3ae07b6b8c9e.png)
![](https://img.xkw.com/dksih/QBM/editorImg/2023/10/11/1b4e3d48-a669-44db-b5bc-436adff2f423.jpg?resizew=162)
(1)求证:
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/cd510f20a8a3a58711205fa75fff9445.png)
(2)若
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/72cb97395ebc5ee1b212afb7a97b985c.png)
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![](https://staticzujuan.xkw.com/quesimg/Upload/formula/411b38a18046fea8e9fab1f9f9b80a5f.png)
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