某公园有一个圆形场地的中心是喷泉
,从点A向四周喷水,喷出的水柱为抛物线,且形状相同.如图,以水平方向为
轴,点
为原点建立平面直角坐标系,点A在
轴上,
轴上的点
,
为水柱的落水点.
长度为
,
长度为
,水柱在与圆形场地中心
的水平距离为
处达到最高点.
![](https://img.xkw.com/dksih/QBM/editorImg/2024/1/19/4a265fc5-b1df-4640-9360-17ee1e36315b.png?resizew=339)
(1)求水柱所在抛物线(第一象限部分)的函数表达式和水柱能达到的最大高度.
(2)若需要在
上的点
处竖立旗杆
,
m,
,旗杆顶部
是否会碰到水柱?
(3)若打算在喷泉内部竖立若干高度为
的旗杆(旗杆顶部不能碰到水柱),施工人员在适合竖立旗杆的地面位置上全都涂上颜色作上标记.请直接写出需要用颜色标记的面积.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ef4113c492885ba7c47fe42ac792578f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/81dea63b8ce3e51adf66cf7b9982a248.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/1dde8112e8eb968fd042418dd632759e.png)
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![](https://staticzujuan.xkw.com/quesimg/Upload/formula/81dea63b8ce3e51adf66cf7b9982a248.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c5db41a1f31d6baee7c69990811edb9f.png)
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![](https://staticzujuan.xkw.com/quesimg/Upload/formula/616f7c91dd81ac1aec99d7ba82e4db7d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b90e0f35eda1a729fed485f83da5ea9d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/18e3912ca9a90d0eb72ac9734913b8ae.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/1dde8112e8eb968fd042418dd632759e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b503e63e24d85326a19e7e61a51e72db.png)
![](https://img.xkw.com/dksih/QBM/editorImg/2024/1/19/4a265fc5-b1df-4640-9360-17ee1e36315b.png?resizew=339)
(1)求水柱所在抛物线(第一象限部分)的函数表达式和水柱能达到的最大高度.
(2)若需要在
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b90e0f35eda1a729fed485f83da5ea9d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2a30f3a8b673cc28bd90c50cf1a35281.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/8535f6da82fc9ce43375b547269fa824.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/19198ddf01d0703e93fbe084b841ce1f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/3416f5cd982710c19707e17f8ea8bf11.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a0ed1ec316bc54c37c4286c208f55667.png)
(3)若打算在喷泉内部竖立若干高度为
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c2c205623d43bc6522e814af14ef9118.png)
更新时间:2024-01-20 10:31:40
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【推荐1】已知抛物线的顶点坐标为
,与y轴交于点
.
(1)求抛物线的解析式;
(2)当
时,求y的取值的范围.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/bffd4c96d6f2b3bb8ca246ac293d75f2.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/dc878a5fd7b508cf817cbb65d3940547.png)
(1)求抛物线的解析式;
(2)当
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/be48cd4158fb76190935ab143de02ba3.png)
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【推荐2】综合与探究
如图1,已知抛物线
与x轴相交于点
,
,与y轴交于点C.
(1)求抛物线
及直线
的函数解析式.
(2)如图2,P是直线
下方的抛物线上的一点,过点P作
轴于点Q,交直线AC于点D,当
时,求点P的坐标.
(3)如图3,过点O作
于点M,将线段OM所在的直线沿着x轴平移,使得平移后的直线交x轴于点E,交抛物线于点F,是否存在点F,使得四边形
是平行四边形?若存在,直接写出点F的坐标;若不存在,请说明理由.
如图1,已知抛物线
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/22e59da5115d0dafea24822245f92c48.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/8a18a7caa080988802ba1145b4fe4203.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f55d12701014cf53071093e8739d089b.png)
![](https://img.xkw.com/dksih/QBM/editorImg/2023/10/15/b39992e1-82a0-46c5-8722-39de3abbcf56.png?resizew=641)
(1)求抛物线
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/22e59da5115d0dafea24822245f92c48.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/60ef95894ceebaf236170e8832dcf7e3.png)
(2)如图2,P是直线
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/60ef95894ceebaf236170e8832dcf7e3.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d2784a52c4da98dc9df661fc152fc29e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/fca53542245979a6aaf46df7f554473f.png)
(3)如图3,过点O作
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/99b4073c02329910d8884ec13b5d0a76.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/dafe80ed49f3a9a5e7ea6dfd30009645.png)
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【推荐1】“五福齐临地,吉祥庆云城”,庆云县为丰富人民群众的业余生活,斥巨资修建了各种大小型广场数座,其中在县中心广场上建有直径为12m,且中心矗立雕塑的大型圆水池,水池最外围有四个喷头,喷出水柱的形状为抛物线,在距水池中心2m处达到最大高度为4m,且各个方向喷出的水柱恰好在喷水池的中心雕塑顶端汇合,
![](https://img.xkw.com/dksih/QBM/2022/1/7/2896561822932992/2955105935810560/STEM/abf5640eb8e44a1eb84558a8c5b8ef10.png?resizew=236)
(1)求中心雕塑的高度;
(2)若距池中心1米处置一盏高2.8米的亮化灯,则喷水时亮化灯是否会阻碍喷头喷出的水柱.
![](https://img.xkw.com/dksih/QBM/2022/1/7/2896561822932992/2955105935810560/STEM/abf5640eb8e44a1eb84558a8c5b8ef10.png?resizew=236)
(1)求中心雕塑的高度;
(2)若距池中心1米处置一盏高2.8米的亮化灯,则喷水时亮化灯是否会阻碍喷头喷出的水柱.
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【推荐2】小明的爸爸给小明买了一个高级水枪,想测试一下水枪的射程远近.如图,在一个外墙距地面
的点
和
的点
处,各设置了一个点,小明站在设置点的正前方,水枪喷出的水流看作抛物线的一部分.第一次尝试时,水流从
点射出恰好到达点
处,且水流的最大高度为
,水流的最高点到外墙的水平距离为
,建立平面直角坐标系,水流的高度
与到外墙的水平距离
之间的关系如图所示,点
在
轴上,点
在
轴上,
为地面(水枪到地面的高度忽略不计).
(2)待
处试射后,小明前进
到点
(水流从
点射出,
)处进行第二次试射,若两次试射时,水流所在抛物线的形状完全相同,请判断第二次试射水流能否到达点
处,并说明理由.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f36b51b654efcff60d2d640b9b4c4471.png)
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(2)待
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