如图,已知抛物线
经过两点
,
,C是抛物线与y轴的交点.
![](https://img.xkw.com/dksih/QBM/editorImg/2023/1/8/619b8414-d035-4d59-9685-41dd9181e921.png?resizew=88)
(1)求抛物线的解析式;
(2)点N在y轴正半轴上运动,是否存在点N使得
与
相似,如果存在,请求出点N的坐标;
(3)点P的横坐标为m,且在平面直角坐标系第一象限内的抛物线上运动,设△PBC的面积为S,求S关于m的函数表达式和S的最大值.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2588ccdfad869009db135f4d2da6e8ba.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/913f78382630e50543e5f7192cae3ed3.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7fbdef5d0c05acbf63fa72fa85c5bb45.png)
![](https://img.xkw.com/dksih/QBM/editorImg/2023/1/8/619b8414-d035-4d59-9685-41dd9181e921.png?resizew=88)
(1)求抛物线的解析式;
(2)点N在y轴正半轴上运动,是否存在点N使得
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/40bd8b071b24e92e0b1fd38101ffe400.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ebcc52a06d806fde891e09a0a389fcd4.png)
(3)点P的横坐标为m,且在平面直角坐标系第一象限内的抛物线上运动,设△PBC的面积为S,求S关于m的函数表达式和S的最大值.
更新时间:2023-01-05 19:57:17
|
相似题推荐
解答题-问答题
|
较难
(0.4)
【推荐1】如图,抛物线
交
轴于A、B两点,交
轴于点C,
点P是它的顶点,点A的横坐标是
3,点B的横坐标是1.
![](https://img.xkw.com/dksih/QBM/2013/5/6/1573648015327232/1573648021733376/STEM/0f7f4c7bdde24bd4abe4650ce0140328.png)
(1)求
、
的值;
(2)求直线PC的解析式;
(3)请探究以点A为圆心、直径为5的圆与直线PC的位置关系,并说明理由.
(参考数据
,
,
)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/3bac38c104f5ed9eb78722f3fa438453.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/81dea63b8ce3e51adf66cf7b9982a248.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d053b14c8588eee2acbbe44fc37a6886.png)
点P是它的顶点,点A的横坐标是
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/80f07ee9754aa1598263c6679405fde4.png)
![](https://img.xkw.com/dksih/QBM/2013/5/6/1573648015327232/1573648021733376/STEM/0f7f4c7bdde24bd4abe4650ce0140328.png)
(1)求
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/294f5ba74cdf695fc9a8a8e52f421328.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b6a24198bd04c29321ae5dc5a28fe421.png)
(2)求直线PC的解析式;
(3)请探究以点A为圆心、直径为5的圆与直线PC的位置关系,并说明理由.
(参考数据
![](https://img.xkw.com/dksih/QBM/2013/5/6/1573648015327232/1573648021733376/STEM/f626be0afe494eb4905aadf934aefe05.png)
![](https://img.xkw.com/dksih/QBM/2013/5/6/1573648015327232/1573648021733376/STEM/59a217346c5840dea704396ab1757023.png)
![](https://img.xkw.com/dksih/QBM/2013/5/6/1573648015327232/1573648021733376/STEM/963b632230e648e189753aacf861acf5.png)
您最近一年使用:0次
解答题-问答题
|
较难
(0.4)
【推荐2】如图,抛物线
与x轴交于点A,B,与y轴交于点C,已知A,C两点坐标分别是
,
,连接
,
.
![](https://img.xkw.com/dksih/QBM/2023/4/21/3221359092555776/3256051546120192/STEM/995e8305bc9f4e5785075f93e6efabc9.png?resizew=172)
(1)求抛物线的解析式和
所在直线的解析式;
(2)将
沿
所在直线折叠,得到
,点A的对应点D是否落在抛物线的对称轴上,若点D在对称轴上,请求出点D的坐标;若点D不在对称轴上,请说明理由.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7c1a89c495be618bca7c4e6af85ba8ec.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a8748dc55e2f45bc37fc4d84d7310f79.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ff6b7670302e7015123b9446afab1f27.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/60ef95894ceebaf236170e8832dcf7e3.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0dc5c9827dfd0be5a9c85962d6ccbfb1.png)
![](https://img.xkw.com/dksih/QBM/2023/4/21/3221359092555776/3256051546120192/STEM/995e8305bc9f4e5785075f93e6efabc9.png?resizew=172)
(1)求抛物线的解析式和
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/60ef95894ceebaf236170e8832dcf7e3.png)
(2)将
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/15c0dbe3c080c4c4636c64803e5c1f76.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0dc5c9827dfd0be5a9c85962d6ccbfb1.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0005e1ef60f6ddc5f9a83e3de1ef3b2e.png)
您最近一年使用:0次
解答题-问答题
|
较难
(0.4)
解题方法
【推荐1】如图,在矩形
中,
,点
是边
上一点(点
不和点
、点
重合)连接
,过点
作
的垂线交
于点
,交对角线
于点
.设
,
![](https://img.xkw.com/dksih/QBM/2021/5/2/2712426242031616/2718849699422208/STEM/64340acc-d064-4c25-89cb-1d2b3afb79c7.png)
(1)当
时,求
的值;
(2)用含
的代数式表示
的值;
(3)在点
运动的过程中,
能否与
相似,如能,请求出此时
之长,不能请说明理由.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/411b38a18046fea8e9fab1f9f9b80a5f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/154bca0523c33770045fed4426a9e00b.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2a30f3a8b673cc28bd90c50cf1a35281.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/03902478df1a55bc99703210bccab910.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2a30f3a8b673cc28bd90c50cf1a35281.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5963abe8f421bd99a2aaa94831a951e9.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/8455657dde27aabe6adb7b188e031c11.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/85c4bdfb0db1e31e8459df1d15f9ab55.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5963abe8f421bd99a2aaa94831a951e9.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/85c4bdfb0db1e31e8459df1d15f9ab55.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/85c4bdfb0db1e31e8459df1d15f9ab55.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a0ed1ec316bc54c37c4286c208f55667.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d40b319212a7e7528b053e1c7097e966.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/895dc3dc3a6606ff487a4c4863e18509.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e2c30f73c718bde8352055a14987fc15.png)
![](https://img.xkw.com/dksih/QBM/2021/5/2/2712426242031616/2718849699422208/STEM/64340acc-d064-4c25-89cb-1d2b3afb79c7.png)
(1)当
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e55aa0a20848c37c1892c567b2315e04.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c593ba4e7d7e89e66a926591022adcb1.png)
(2)用含
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/81dea63b8ce3e51adf66cf7b9982a248.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2fa67d5bdf15ad8f8f1cd133445a357f.png)
(3)在点
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2a30f3a8b673cc28bd90c50cf1a35281.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7bd9311e5295f10061deb2872fe04af5.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/661ff55b5ebbadfb600989af3cfce2fd.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/06e322e0c87479bba874db9ae9ba36b5.png)
您最近一年使用:0次
解答题-问答题
|
较难
(0.4)
名校
【推荐2】如图,B为双曲线
(x>0)上一点,直线AB平行于y轴交直线y=x于点A,交x轴于点D,
与直线y=x交于点C,若OB2﹣AB2=4
![](https://img.xkw.com/dksih/QBM/2017/4/5/1659286634905600/1660778988429312/STEM/01740a06d36c40fb9c677eedab2e16fa.png?resizew=137)
(1)求k的值;
(2)点B的横坐标为4时,求△ABC的面积;
(3)双曲线上是否存在点B,使△ABC∽△AOD?若存在,求出点B的坐标;若不存在,请说明理由.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/07854693dd2e33f66030d6106eb6e0ee.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/07854693dd2e33f66030d6106eb6e0ee.png)
![](https://img.xkw.com/dksih/QBM/2017/4/5/1659286634905600/1660778988429312/STEM/01740a06d36c40fb9c677eedab2e16fa.png?resizew=137)
(1)求k的值;
(2)点B的横坐标为4时,求△ABC的面积;
(3)双曲线上是否存在点B,使△ABC∽△AOD?若存在,求出点B的坐标;若不存在,请说明理由.
您最近一年使用:0次
解答题-问答题
|
较难
(0.4)
【推荐1】已知:如图,抛物线
与坐标轴分别交于点
,
,
,点
是线段
上方抛物线上的一个动点.
![](https://img.xkw.com/dksih/QBM/editorImg/2023/12/7/25cbb8fd-a1c5-4d47-9d7e-0d0520570d76.png?resizew=285)
(1)求抛物线的解析式;
(2)当点
运动到什么位置时,
的面积有最大值?
(3)过点
作
轴的垂线,交线段
于点
,再过点
作
轴交抛物线于点
,连接
,请问是否存在点
使
为等腰直角三角形?若存在,求出点
的坐标;若不存在,说明理由.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a90385c676848de67293e3ed6bc000fe.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e7dc24c48d8b988443cc189488e8185d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/49dd31773f55719ebd91ed3389d0de68.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/1a577bd781af776dfe8bb469efbab1c0.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/dad2a36927223bd70f426ba06aea4b45.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f52a58fbaf4fea03567e88a9f0f6e37e.png)
![](https://img.xkw.com/dksih/QBM/editorImg/2023/12/7/25cbb8fd-a1c5-4d47-9d7e-0d0520570d76.png?resizew=285)
(1)求抛物线的解析式;
(2)当点
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/dad2a36927223bd70f426ba06aea4b45.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2205cffebf8c4d5f81d15ed7b85c8936.png)
(3)过点
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/dad2a36927223bd70f426ba06aea4b45.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/81dea63b8ce3e51adf66cf7b9982a248.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f52a58fbaf4fea03567e88a9f0f6e37e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/8455657dde27aabe6adb7b188e031c11.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/dad2a36927223bd70f426ba06aea4b45.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/bd26a79182e530bd89cb3587ae8c85f6.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2a30f3a8b673cc28bd90c50cf1a35281.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e6e490f703eb6c9bb1278c78ebc2d661.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/dad2a36927223bd70f426ba06aea4b45.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7cff7399ecc698e2fb415147c96d0d03.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/dad2a36927223bd70f426ba06aea4b45.png)
您最近一年使用:0次
解答题-问答题
|
较难
(0.4)
【推荐2】在平面直角坐标系中,抛物线
(b、c是常数)经过点
和点
,点P在抛物线上,且点P的横坐标为m.
(1)求b、c的值.
(2)当
的面积为8时,求m的值.
(3)当点P在点A的右侧时,抛物线在点P与点A之间的部分(包含端点)记为图象G,设G的最高点与最低点的纵坐标之差为h,求h与m之间的函数关系式.
(4)点Q的横坐标为
,纵坐标为
,以
为对角线构造矩形,且矩形的边与坐标轴平行.当抛物线在矩形内部的点的纵坐标y随x的增大而增大或y随x的增大而减小时,直接写出m的取值范围.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/58d88bbd34102b55fa928e8ff83f0d52.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a0929421a6188c3122442866b0b85a5e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/08ef03f452410ab19c6246567c427178.png)
(1)求b、c的值.
(2)当
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2205cffebf8c4d5f81d15ed7b85c8936.png)
(3)当点P在点A的右侧时,抛物线在点P与点A之间的部分(包含端点)记为图象G,设G的最高点与最低点的纵坐标之差为h,求h与m之间的函数关系式.
(4)点Q的横坐标为
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/94b00e954240d3d2a6710214ca03a5a5.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0623207595425920f16e76a7f8f268b6.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7a5f1641947153c80b987320885a2b57.png)
您最近一年使用:0次