综合与探究
如图,抛物线与
轴相交于
,
两点,且经过点
,点
为抛物线与
轴的交点.
(1)求抛物线的解析式和点C的坐标;
(2)若点
为抛物线图象上的一点,
,求
点的坐标;
(3)设点
是线段
上的动点,作
轴交抛物线于点
,求线段
长度的最大值.
如图,抛物线与
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/81dea63b8ce3e51adf66cf7b9982a248.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/8a18a7caa080988802ba1145b4fe4203.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f55d12701014cf53071093e8739d089b.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/663d94efcc8a8a4b5a3563e94eb8fbb7.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c5db41a1f31d6baee7c69990811edb9f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d053b14c8588eee2acbbe44fc37a6886.png)
![](https://img.xkw.com/dksih/QBM/editorImg/2023/10/12/518442b8-c89d-4e8e-81e2-67a0b06d9417.png?resizew=242)
(1)求抛物线的解析式和点C的坐标;
(2)若点
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/dad2a36927223bd70f426ba06aea4b45.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/871086b40fdebd773d04b75fea46cefc.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/dad2a36927223bd70f426ba06aea4b45.png)
(3)设点
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/acc290b44635265137fdf13146b6a6d9.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/60ef95894ceebaf236170e8832dcf7e3.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7ac5c9bc238d2eb0e735b0477417ffec.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/8455657dde27aabe6adb7b188e031c11.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c118858379800688c993a8b61270b356.png)
更新时间:2023-10-10 10:22:10
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相似题推荐
解答题-问答题
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适中
(0.65)
【推荐1】如图,抛物线y=﹣x2+bx+c与x轴相交于A、B(3,0)两点,与y轴交于点C(0,3),顶点为D,抛物线的对称轴DF与BC相交于点E,与x轴相交于点F.
![](https://img.xkw.com/dksih/QBM/2022/3/18/2938718166687744/2957257776685056/STEM/67b818c70a21441f855886d0fdaf5f7c.png?resizew=178)
(1)求抛物线和直线AC的解析式;
(2)在抛物线上是否存在点P,使以点A、C、P为顶点的三角形是直角三角形,且AP为斜边?若存在,求出点P的坐标;若不存在,说明理由.
(3)设过E的直线与抛物线相交于点M(x1,y1),N(x2,y2),求|x1﹣x2|的最小值.
![](https://img.xkw.com/dksih/QBM/2022/3/18/2938718166687744/2957257776685056/STEM/67b818c70a21441f855886d0fdaf5f7c.png?resizew=178)
(1)求抛物线和直线AC的解析式;
(2)在抛物线上是否存在点P,使以点A、C、P为顶点的三角形是直角三角形,且AP为斜边?若存在,求出点P的坐标;若不存在,说明理由.
(3)设过E的直线与抛物线相交于点M(x1,y1),N(x2,y2),求|x1﹣x2|的最小值.
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【推荐2】在平面直角坐标系中,已知抛物线C1:
,关于y轴对称的抛物线为C2.
(1)当点A(﹣1,0)在这个抛物线C1图象上时,
①求抛物线C1的函数解析式.
②抛物线C1上有一点P到x轴的距离为1,求点P的坐标.
(2)直接写出抛物线C2的解析式为 ;抛物线C1与 C2的交点坐标D为 .
(3)抛物线C1与C2的顶点分别为M,N,交点为D,若△MND的面积为6时,直接写出此时的a值.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ccf7d251f10da97df32eb9faafe78720.png)
(1)当点A(﹣1,0)在这个抛物线C1图象上时,
①求抛物线C1的函数解析式.
②抛物线C1上有一点P到x轴的距离为1,求点P的坐标.
(2)直接写出抛物线C2的解析式为 ;抛物线C1与 C2的交点坐标D为 .
(3)抛物线C1与C2的顶点分别为M,N,交点为D,若△MND的面积为6时,直接写出此时的a值.
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【推荐1】如图1,在平面直角坐标系中,抛物线
与x轴分别交于A、B两点,与y轴交于点C,连接
,其中
,
.
(2)点P是直线
上方抛物线上一点,过点P作
轴交
于点E,作
轴交
于点F,求
的最小值,及此时点P的坐标;
(3)如图2,x轴上有一点
,将抛物线向x轴正方向平移,使得抛物线恰好经过点Q,得到新抛物线y1,点D是新抛物线
与原抛物线的交点,点E是直线
上一动点,连接
,当
是以
为腰的等腰三角形时,直接写出所有符合条件的点E的坐标.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/58d88bbd34102b55fa928e8ff83f0d52.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d8ed1fce01430ae31294c29d626626f0.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/913f78382630e50543e5f7192cae3ed3.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/859bf9cae1ba707d53066042073251f9.png)
(2)点P是直线
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0dc5c9827dfd0be5a9c85962d6ccbfb1.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/213144e25996b7fd3cd69d9c5ae56be2.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0dc5c9827dfd0be5a9c85962d6ccbfb1.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/bf0215fcd72572bb524eca8a7fdc3f4e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0dc5c9827dfd0be5a9c85962d6ccbfb1.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/6a3f43a64b78c184710d348797037503.png)
(3)如图2,x轴上有一点
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/14dd75003428d5b4071aabbaa4d11cbc.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/54015ff5b49e3283901da1291b6b921d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0dc5c9827dfd0be5a9c85962d6ccbfb1.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/3525ddc5153fada64eaf14e50b536542.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/08b6056134daade6c053b1f28e3ebc6c.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/3525ddc5153fada64eaf14e50b536542.png)
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【推荐2】如图,抛物线
与
轴的交点分别是
,与y轴的交点为C,直线
是抛物线的对称轴.
![](https://img.xkw.com/dksih/QBM/editorImg/2022/11/5/77e77502-0bec-4eb4-99a6-759b8ef5a1e4.png?resizew=168)
(1)求抛物线的解析式;
(2)设点P是直线
上一个动点,当
的周长最小时,求点P的坐标;
(3)若点E是抛物线上且位于直线BC上方的一个动点,求
的面积最大时点E的坐标.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/63d8de071a9c22c96a59b172d76c127e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/81dea63b8ce3e51adf66cf7b9982a248.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/51b4ff16ea0fe8f9cb73277676f03b3f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0f85fca60a11e1af2bf50138d0e3fe62.png)
![](https://img.xkw.com/dksih/QBM/editorImg/2022/11/5/77e77502-0bec-4eb4-99a6-759b8ef5a1e4.png?resizew=168)
(1)求抛物线的解析式;
(2)设点P是直线
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0f85fca60a11e1af2bf50138d0e3fe62.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/df979665ca12befa5edd11669d533715.png)
(3)若点E是抛物线上且位于直线BC上方的一个动点,求
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/bdee944358dbb99d893228c387a00c43.png)
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【推荐1】如图所示,点P是抛物线y=x2上第一象限内的一个点,点A(3,0).
![](https://img.xkw.com/dksih/QBM/2015/11/6/1573925503148032/1573925509013504/STEM/ad803998fa0640ab9535943f3cbcdf4b.png)
(1)令点P的坐标为(x,y),求△OPA的面积S与y的关系式.
(2)S是y的什么函数?S是x的什么函数?
![](https://img.xkw.com/dksih/QBM/2015/11/6/1573925503148032/1573925509013504/STEM/ad803998fa0640ab9535943f3cbcdf4b.png)
(1)令点P的坐标为(x,y),求△OPA的面积S与y的关系式.
(2)S是y的什么函数?S是x的什么函数?
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【推荐2】如图,抛物线
交x轴于点
和点B,交y轴于点
.
![](https://img.xkw.com/dksih/QBM/editorImg/2022/11/21/54aa2134-adaa-4a50-b4e3-2d68d1c0083f.png?resizew=190)
(1)求抛物线的函数表达式;
(2)若点M在抛物线上,且
,求点M的坐标.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b71acf35bb0952c2abba601707d000c0.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/913f78382630e50543e5f7192cae3ed3.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b5558ffa6dc28d437c0467c7f361d444.png)
![](https://img.xkw.com/dksih/QBM/editorImg/2022/11/21/54aa2134-adaa-4a50-b4e3-2d68d1c0083f.png?resizew=190)
(1)求抛物线的函数表达式;
(2)若点M在抛物线上,且
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/bc5323449742f41e11a25e98abf8b509.png)
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