如图1,已知直线
与
轴、
轴分别交于点
和点
,过直线
上的两点
、
分别作
轴的垂线段,垂足分别为
和
,其中
,
.
![](https://img.xkw.com/dksih/QBM/editorImg/2023/9/13/f16f3431-a3e2-4ced-8b88-2cfd4e12e2b3.png?resizew=160)
(1)如果
,
,试判断
的形状;
(2)如果
,(1)中有关
的形状的结论还成立吗?如果成立,请证明;如果不成立,请说明理由;
(3)如图2,题目中的条件不变,如果
,并且
,求经过
、
、
三点的抛物线所对应的函数关系式;
(4)在(3)的条件下,如果抛物线的对称轴
与线段
交于点
,点
是对称轴上一动点,以点
、
、为顶点的三角形和以点
、
、
为顶点的三角形相似,求符合条件的点
的坐标.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/1642eec556eb252de9c1ab7bb5ca90b3.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/81dea63b8ce3e51adf66cf7b9982a248.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d053b14c8588eee2acbbe44fc37a6886.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2a30f3a8b673cc28bd90c50cf1a35281.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/32366143230ca122894a4bada7c7b96d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/1642eec556eb252de9c1ab7bb5ca90b3.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a0ed1ec316bc54c37c4286c208f55667.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/895dc3dc3a6606ff487a4c4863e18509.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/81dea63b8ce3e51adf66cf7b9982a248.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b62769b7177ef4bc952dc1dd51d6b510.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/883f23ab75b490d6e9e03b8ff8b269c7.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4f4c78214e43a8b93f2a57072033cbcf.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/de8610232c77741a37463feba1a66c94.png)
![](https://img.xkw.com/dksih/QBM/editorImg/2023/9/13/f16f3431-a3e2-4ced-8b88-2cfd4e12e2b3.png?resizew=160)
![](https://img.xkw.com/dksih/QBM/editorImg/2023/9/13/e63119b9-475c-42d8-8666-4a9264cebca0.png?resizew=207)
(1)如果
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/cdbf6506e9de40da0f3c51b81b35a901.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c87b351f16728b0023fd63678f8103c7.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/98013a5042685a1db94249e70c62c09a.png)
(2)如果
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c917789152df136cdb602798af7aeb39.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/98013a5042685a1db94249e70c62c09a.png)
(3)如图2,题目中的条件不变,如果
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c917789152df136cdb602798af7aeb39.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5aa3c50b0c0f6987d2eebfe5f8829d3a.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ac047e91852b91af639feec23a9598b2.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5963abe8f421bd99a2aaa94831a951e9.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/54a5d7d3b6b63fe5c24c3907b7a8eaa3.png)
(4)在(3)的条件下,如果抛物线的对称轴
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0f85fca60a11e1af2bf50138d0e3fe62.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f50b3ae183997b707d16eb4e7f6712fa.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/dad2a36927223bd70f426ba06aea4b45.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/acc290b44635265137fdf13146b6a6d9.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/dad2a36927223bd70f426ba06aea4b45.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/acc290b44635265137fdf13146b6a6d9.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ac047e91852b91af639feec23a9598b2.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5963abe8f421bd99a2aaa94831a951e9.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/54a5d7d3b6b63fe5c24c3907b7a8eaa3.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/acc290b44635265137fdf13146b6a6d9.png)
更新时间:2023-09-10 20:25:02
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【推荐1】已知二次函数
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【推荐2】已知一次函数
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【推荐2】如图,在平面直角坐标系中,已知点A的坐标为(2,4),直线x=2与x轴相交于点B,连结OA,抛物线C:y=x2沿射线OA方向平移得到抛物线C',抛物线C'与直线x=2交于点P,设抛物线C'的顶点M的横坐标为m.
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