如图,直线
与x轴交于点
,与y轴交于点B,抛物线
经过A,B.
(1)求抛物线解析式;
(2)
是x轴上一动点.过点E作
轴交于点E,交直线
于点D,交抛物线于点P,连接
.
①点E在线段
上运动,当线段
的长度最大时,求点P的坐标;
②点E在线段
上运动,若
是等腰三角形时,求点E的坐标.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/34d67d534b258dc1774320f6138f486a.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/241ce9bd28046ce9b90f43b391132884.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/58d88bbd34102b55fa928e8ff83f0d52.png)
![](https://img.xkw.com/dksih/QBM/editorImg/2023/11/10/018d5d0c-fcd0-442c-afa6-80759b00db78.png?resizew=297)
(1)求抛物线解析式;
(2)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5850ed6ad7d8e9652625bd03766c61df.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f510d788e893ee3410ae313658822bd6.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b79dd200766db27fb90d6bd1992cf658.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/30513ea48bc1ef3ae78adac83d894f14.png)
①点E在线段
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ae7a3e520a16d4fdd73c4e6a4ce7be0e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/365822bd3945e6a3e871ca979c84cc12.png)
②点E在线段
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ae7a3e520a16d4fdd73c4e6a4ce7be0e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/acee03d4bb4667b6c345221b6c9b0fa4.png)
更新时间:2023-11-02 11:10:29
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【推荐2】如图,在
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平分
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于点
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