若直线
与y轴交于点A,与x轴交于点B,二次函数
的图象经过点A,点B,且抛物线的对称轴为直线
.
(1)求二次函数的解析式;
(2)若点P为直线
下方抛物线上一点,过点P作直线
的垂线,垂足为E,作
轴交直线
于点F,求
周长的最大值及此时点P的坐标;
(3)将抛物线沿射线
方向平移
个单位长度得到新抛物线y′,Q是新抛物线与原抛物线的交点,N是原抛物线对称轴上一动点,在平面内确定一点M,使得以M,N,B,Q为顶点的四边形是以
为边的菱形,请写出所有符合条件的点M的坐标,并写出求解点M坐标的其中一种情况的过程.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f707f9a66d35b331b9dceb721ffd8efe.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a90385c676848de67293e3ed6bc000fe.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/707ea658f3a9359f5740d5aab48f7948.png)
![](https://img.xkw.com/dksih/QBM/editorImg/2023/7/8/774fdae5-0b22-4f20-8d99-071d5e738d27.png?resizew=217)
![](https://img.xkw.com/dksih/QBM/editorImg/2023/7/8/b6d5a873-4bcd-48ea-b900-dc92a502fae3.png?resizew=234)
(1)求二次函数的解析式;
(2)若点P为直线
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f52a58fbaf4fea03567e88a9f0f6e37e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f52a58fbaf4fea03567e88a9f0f6e37e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b749baee563b6fd88196c75d29fc9797.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f52a58fbaf4fea03567e88a9f0f6e37e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/91b51d3992644d37dc71c9b5a97d515c.png)
(3)将抛物线沿射线
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f52a58fbaf4fea03567e88a9f0f6e37e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2967337e3fcb228dded64ab0c41a17e0.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7785afeeaf274892253d04b4f693b367.png)
更新时间:2023-07-02 18:19:58
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【推荐1】如图,抛物线
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【推荐2】已知:如图,在平面直角坐标系xOy中,直线
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【推荐2】已知二次函数的图象的顶点在原点O,且经过点A(1,
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【推荐2】已知
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,
为正整数,
.设
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,
,
为坐标原点.若
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(1)求图象经过
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,
三点的二次函数的解析式;
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是抛物线上的一动点,直线
交线段
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