已知,经过点
的抛物线
与x轴相交于点
及原点O.
(2)如图1,过点A作
轴,垂足为H,平行于y轴的直线交线段
于点Q,交抛物线于点P,当四边形
为平行四边形时,求
的度数;
(3)如图2,试探究:在抛物线上是否存在点C,使
?若存在,请求出直线
解析式;若不存在,请说明理由.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/56801f4cfc34a5f57cc7ad3b8dd74902.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a90385c676848de67293e3ed6bc000fe.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4d4218690b49de906a22dda72c578956.png)
(2)如图1,过点A作
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e7277dcfb480720f2f37413cb0d34d09.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e2c3d2cba96f6f03520c0b3f6e4da03e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c5855605690a55ef41618357817f4fd5.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5c3a3bf63440a2fdd769162516fb0e1c.png)
(3)如图2,试探究:在抛物线上是否存在点C,使
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/3f48fbb86f36b4c50069459ee01bae44.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/60ef95894ceebaf236170e8832dcf7e3.png)
更新时间:2024-05-22 10:32:27
|
相似题推荐
解答题-问答题
|
较难
(0.4)
【推荐1】如图,在平面直角坐标系中,二次函数
的图象与
轴交于
,
两点,与
轴交于点
.
![](https://img.xkw.com/dksih/QBM/editorImg/2023/2/7/297eba62-0f09-47bc-ada1-bf584a2199a2.png?resizew=146)
(1)求二次函数的解析式;
(2)连接
,点
从
点出发,在线段
上以每秒3个单位长度的速度向
点运动,同时点
从
点出发,在线段
上以每秒1个单位长度向
点运动,其中一个点到达终点时,另一个点也停止运动,当
存在时,求运动多少秒使
的面积最大,最大面积是多少?
(3)在运动过程中,是否存在一个时刻
,使以点
、
、
构成的三角形与
相似?若存在,求出所有可能时刻的
值;若不存在,请说明理由.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2844058287d2c17ac9c10f6358957c9c.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/81dea63b8ce3e51adf66cf7b9982a248.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/527adf33876b600568772d6ff0a91310.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e15dae32953862fc6fbfb29645894a50.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d053b14c8588eee2acbbe44fc37a6886.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c5db41a1f31d6baee7c69990811edb9f.png)
![](https://img.xkw.com/dksih/QBM/editorImg/2023/2/7/297eba62-0f09-47bc-ada1-bf584a2199a2.png?resizew=146)
(1)求二次函数的解析式;
(2)连接
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0dc5c9827dfd0be5a9c85962d6ccbfb1.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/dad2a36927223bd70f426ba06aea4b45.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5963abe8f421bd99a2aaa94831a951e9.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f52a58fbaf4fea03567e88a9f0f6e37e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7f9e8449aad35c5d840a3395ea86df6d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/acc290b44635265137fdf13146b6a6d9.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7f9e8449aad35c5d840a3395ea86df6d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0dc5c9827dfd0be5a9c85962d6ccbfb1.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c5db41a1f31d6baee7c69990811edb9f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/333a89e8227c1f57313897d4424d04f0.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/333a89e8227c1f57313897d4424d04f0.png)
(3)在运动过程中,是否存在一个时刻
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/36a1b09c653185842513e24ebba60bb3.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/dad2a36927223bd70f426ba06aea4b45.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7f9e8449aad35c5d840a3395ea86df6d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/acc290b44635265137fdf13146b6a6d9.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4962343ca7d065aee473dbf79eb8d3c5.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/36a1b09c653185842513e24ebba60bb3.png)
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【推荐2】如图,已知二次函数
的图像经过点
.
(1)求该二次函数的表达式;
(2)点D是该二次函数图像上的一点,且满足
(O是坐标原点),求点D的坐标;
(3)点P是该二次函数图像上位于第一象限内的一动点,直线
分别交
、y轴于点E、F,若
、
的面积分别为
、
,是否存在点P,使得
.若存在,请求出点P的坐标,若不存在,请说明理由.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4fe6337d68cd5653767e3a1889b8b2e3.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ff240d1ac55e8c4a6b53562b0a049013.png)
![](https://img.xkw.com/dksih/QBM/editorImg/2023/7/7/01a082f4-5917-4fe1-9a1e-699755c97e46.png?resizew=168)
(1)求该二次函数的表达式;
(2)点D是该二次函数图像上的一点,且满足
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/50a7636c1dc29709edb9a648007ca940.png)
(3)点P是该二次函数图像上位于第一象限内的一动点,直线
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/bd33764ff4efddfe11a98a609753715c.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0dc5c9827dfd0be5a9c85962d6ccbfb1.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ad3cd61d00f89e68ccca2cac5c937783.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5f2ea13010e2399194be2a681310543e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e097c8d4c948de063796bd19f85b3a9a.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/1e0bd63f55069a3bc870915010b39225.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/31dd78e9156dcf6db93f6cbcc5b43b14.png)
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名校
【推荐1】如图,在平面直角坐标系中,AB=AC=10,线段BC在轴上,BC=12,点B的坐标为(﹣3,0),线段AB交y轴于点E,过A作AD⊥BC于D,动点P从原点出发,以每秒3个单位的速度沿x轴向右运动,设运动的时间为t秒.
![](https://img.xkw.com/dksih/QBM/2018/12/4/2089474780839936/2095389784473600/STEM/6d585d70533743038bf7bba8ed80e00c.png?resizew=395)
(1)点E的坐标为( , );
(2)当△BPE是等腰三角形时,求t的值;
(3)若点P运动的同时,△ABC以B为位似中心向右放大,且点C向右运动的速度为每秒2个单位,△ABC放大的同时高AD也随之放大,当以EP为直径的圆与动线段AD所在直线相切,求t的值和此时C点的坐标.
![](https://img.xkw.com/dksih/QBM/2018/12/4/2089474780839936/2095389784473600/STEM/6d585d70533743038bf7bba8ed80e00c.png?resizew=395)
(1)点E的坐标为( , );
(2)当△BPE是等腰三角形时,求t的值;
(3)若点P运动的同时,△ABC以B为位似中心向右放大,且点C向右运动的速度为每秒2个单位,△ABC放大的同时高AD也随之放大,当以EP为直径的圆与动线段AD所在直线相切,求t的值和此时C点的坐标.
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【推荐2】如图, 已知抛物线
的对称轴为直线
,且抛物线经过点
,
两点,与x轴交于点B.
(2)点 D 是第二象限的抛物线上的一个动点,求使
面积最大时点D的坐标;
(3)设点M为此抛物线的对称轴上的一点,求使
为直角三角形的点M的坐标.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/517b33ccecf510bbd3da224ff375254b.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/99c6875d552e9fff3c7d655f3a59b166.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/21c5463fc16c52f242160645eadd4bda.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c49ca851aa912a2d356404013798a0d9.png)
(2)点 D 是第二象限的抛物线上的一个动点,求使
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/661ff55b5ebbadfb600989af3cfce2fd.png)
(3)设点M为此抛物线的对称轴上的一点,求使
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f955e5cc9f108de6f3ca01e5eb84c52e.png)
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【推荐1】综合与探究在平面直角坐标系中,二次函数
的图象与
轴交于
,
两点,与
轴交于点
.
![](https://img.xkw.com/dksih/QBM/2021/5/2/2712451808591872/2715678676746240/STEM/53ac9c41-770b-477b-9910-4c277c485b04.png?resizew=268)
(1)求抛物线与直线
的函数解析式;
(2)若点
是直线
上方抛物线上的一动点,过点
作
轴于点
,交直线
于点
,求线段
的最大值.
(3)点
为抛物线上一动点,在
轴上是否存在点
,使以
、
、
、
为顶点的四边形是平行四边形?若存在,直接写出点
的坐标;若不存在,说明理由.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/9a0d44326c214c7a5ecc3068a29ec96f.png)
![](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/d053b14c8588eee2acbbe44fc37a6886.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c5db41a1f31d6baee7c69990811edb9f.png)
![](https://img.xkw.com/dksih/QBM/2021/5/2/2712451808591872/2715678676746240/STEM/53ac9c41-770b-477b-9910-4c277c485b04.png?resizew=268)
(1)求抛物线与直线
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/60ef95894ceebaf236170e8832dcf7e3.png)
(2)若点
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/dad2a36927223bd70f426ba06aea4b45.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/60ef95894ceebaf236170e8832dcf7e3.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/dad2a36927223bd70f426ba06aea4b45.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/08b1da9046b4cb82135a4a1eaa528c53.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a0ed1ec316bc54c37c4286c208f55667.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/60ef95894ceebaf236170e8832dcf7e3.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/8455657dde27aabe6adb7b188e031c11.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e0629ce42392a7fe9be21d25c39c3e64.png)
(3)点
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ac047e91852b91af639feec23a9598b2.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/81dea63b8ce3e51adf66cf7b9982a248.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/acc290b44635265137fdf13146b6a6d9.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5963abe8f421bd99a2aaa94831a951e9.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c5db41a1f31d6baee7c69990811edb9f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ac047e91852b91af639feec23a9598b2.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/acc290b44635265137fdf13146b6a6d9.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/acc290b44635265137fdf13146b6a6d9.png)
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【推荐2】如图1,平面直角坐标系中,抛物线y=ax2﹣4ax+c与直线y=kx+1(k≠0)交于y轴上一点A和第一象限内一点B,该抛物线顶点H的纵坐标为5.
(1)求抛物线的解析式;
(2)连接AH、BH,抛物线的对称轴与直线y=kx+1(k≠0)交于点K,若S△AHB=
,求k的值;
(3)在(2)的条件下,点P是直线AB上方的抛物线上的一动点(如图2),连接PA.当∠PAB=45°时,
ⅰ)求点P的坐标;
ⅱ)已知点M在抛物线上,点N在x轴上,当四边形PBMN为平行四边形时,请求出点M的坐标.
(1)求抛物线的解析式;
(2)连接AH、BH,抛物线的对称轴与直线y=kx+1(k≠0)交于点K,若S△AHB=
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/679ec4b3991a6a773a89b3d1b0160eae.png)
(3)在(2)的条件下,点P是直线AB上方的抛物线上的一动点(如图2),连接PA.当∠PAB=45°时,
ⅰ)求点P的坐标;
ⅱ)已知点M在抛物线上,点N在x轴上,当四边形PBMN为平行四边形时,请求出点M的坐标.
![](https://img.xkw.com/dksih/QBM/2018/9/4/2024978208899072/2025816232263680/STEM/57e99e13d3e84ee0b2f0ced671e9e22d.png?resizew=137)
![](https://img.xkw.com/dksih/QBM/2018/9/4/2024978208899072/2025816232263680/STEM/d9b897f023064131acbe192476f3fd47.png?resizew=125)
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【推荐3】在平面直角坐标系中,抛物线
(
为常数)与
轴交于点
和点
,与
轴交于点
.
(1)求此抛物线对应的函数表达式并写出顶点坐标;
(2)当
时,
的取值范围是________;
(3)抛物线上有一点
,点
的横坐标为
;
①当点
在
、
两点之间(包括
、
两点)运动时,抛物线在
、
两点之间的部分(包括
、
两点)记为图象
,设图象
的最高点与最低点的纵坐标之差为
,求
与
之间的函数关系式并写出自变量
的取值范围;
②已知点
,以
为对角线构造矩形
且矩形的边与坐标轴平行,当矩形
的边与抛物线有3个交点时,直接写出
的取值范围.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/52387621283198eb16bea9c41fee46ed.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/294f5ba74cdf695fc9a8a8e52f421328.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/81dea63b8ce3e51adf66cf7b9982a248.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a0929421a6188c3122442866b0b85a5e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7f9e8449aad35c5d840a3395ea86df6d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d053b14c8588eee2acbbe44fc37a6886.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c5db41a1f31d6baee7c69990811edb9f.png)
(1)求此抛物线对应的函数表达式并写出顶点坐标;
(2)当
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d18aca0e7da68266cda4d4af074a3d02.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d053b14c8588eee2acbbe44fc37a6886.png)
(3)抛物线上有一点
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/dad2a36927223bd70f426ba06aea4b45.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/dad2a36927223bd70f426ba06aea4b45.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b6a24198bd04c29321ae5dc5a28fe421.png)
①当点
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/dad2a36927223bd70f426ba06aea4b45.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5963abe8f421bd99a2aaa94831a951e9.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7f9e8449aad35c5d840a3395ea86df6d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5963abe8f421bd99a2aaa94831a951e9.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7f9e8449aad35c5d840a3395ea86df6d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5963abe8f421bd99a2aaa94831a951e9.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/dad2a36927223bd70f426ba06aea4b45.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5963abe8f421bd99a2aaa94831a951e9.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/dad2a36927223bd70f426ba06aea4b45.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/895dc3dc3a6606ff487a4c4863e18509.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/895dc3dc3a6606ff487a4c4863e18509.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/3eabd5f3a86afe49dcd70571e2b96cfd.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/3eabd5f3a86afe49dcd70571e2b96cfd.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b6a24198bd04c29321ae5dc5a28fe421.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b6a24198bd04c29321ae5dc5a28fe421.png)
②已知点
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d033ecc37537d5038b8c010878939277.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/6c8ffe24cf9f327aeb241225ab15ab1a.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/92c92ac541002595caa8242eab2fac6e.png)
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