如图1,抛物线
经过平行四边形
的顶点
, 抛物线与
轴的另一交点为E.经过点
的直线
将平行四边形
分割为面积相等两部分,与
轴交于一点
.点
在直线
上方抛物线上一动点,设点
的横坐标为
,
求抛物线的解析式;
当
何值时,
的面积最大?并求最大值;
是否存在点
使
为直角三角形?若存在,求出
的值:若不存在,说明理由.
![](https://img.xkw.com/dksih/QBM/2020/4/19/2445035763130368/2445735229054976/STEM/b2d79d12f6374062aac0c17a7a726ea4.png?resizew=217)
![](https://img.xkw.com/dksih/QBM/2020/4/19/2445035763130368/2445735229054976/STEM/8ec83e8ef57e4dd291c5f99b0032da7d.png?resizew=192)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a90385c676848de67293e3ed6bc000fe.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/411b38a18046fea8e9fab1f9f9b80a5f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/36c4e4f59c4b46deabb25f07b91cde21.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/81dea63b8ce3e51adf66cf7b9982a248.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2a30f3a8b673cc28bd90c50cf1a35281.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0f85fca60a11e1af2bf50138d0e3fe62.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/411b38a18046fea8e9fab1f9f9b80a5f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d053b14c8588eee2acbbe44fc37a6886.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a0ed1ec316bc54c37c4286c208f55667.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/dad2a36927223bd70f426ba06aea4b45.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0f85fca60a11e1af2bf50138d0e3fe62.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/dad2a36927223bd70f426ba06aea4b45.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/36a1b09c653185842513e24ebba60bb3.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/9bf6c84731e5e1bd335ecfc2d36c3d81.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/1f53190d6ead827a6338b9de847aeaf1.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/36a1b09c653185842513e24ebba60bb3.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/def9265137e5fd300081684e44f4ceb7.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f62295c36d2e2174908c2bec0eb5b30f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/dad2a36927223bd70f426ba06aea4b45.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/810e5c85b802eb0832513a43f9ed12a6.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/36a1b09c653185842513e24ebba60bb3.png)
![](https://img.xkw.com/dksih/QBM/2020/4/19/2445035763130368/2445735229054976/STEM/b2d79d12f6374062aac0c17a7a726ea4.png?resizew=217)
![](https://img.xkw.com/dksih/QBM/2020/4/19/2445035763130368/2445735229054976/STEM/8ec83e8ef57e4dd291c5f99b0032da7d.png?resizew=192)
更新时间:2020-04-20 20:43:58
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【推荐1】(1)已知:如图,
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【推荐2】如图,正比例函数y=
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【推荐1】在平面直角坐标系
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![](https://staticzujuan.xkw.com/quesimg/Upload/formula/63d8de071a9c22c96a59b172d76c127e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/45d57173ef4cd72eb270686875dfd623.png)
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解题方法
【推荐2】如图,顶点为M的抛物线y=ax2+bx+3与x轴交于A(3,0),B(﹣1,0)两点,与y轴交于点C
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(2)在直线AC的上方的抛物线上,有一点P(不与点M重合),使△ACP的面积等于△ACM的面积,请求出点P的坐标;
(3)在y轴上是否存在一点Q,使得△QAM为直角三角形?若存在,请直接写出点Q的坐标:若不存在,请说明理由.
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