在平面直角坐标系
中,已知抛物线
与
轴分别交于点
和点
,与
轴交于点
.
的坐标为
,求抛物线的表达式和点
的坐标;
(2)过点
作
轴的垂线
,将抛物线在
轴右侧的部分沿直线
翻折,将翻折得到的图象与原抛物线剩余部分的图象组成新的图形,记为图形
.
①在(1)的条件下,在图形
位于
轴上方的部分是否存在点
,使得
?若存在,求点
的坐标;若不存在,请说明理由;
②如图2,已知点
和点
是图形
上的点.设
,当
时,请直接写出
的取值范围.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7ee31829d0d4d5f779a957d7df8058ab.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b798a6667da82039e0d7c2a7eedb1945.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/81dea63b8ce3e51adf66cf7b9982a248.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/d053b14c8588eee2acbbe44fc37a6886.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c5db41a1f31d6baee7c69990811edb9f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5963abe8f421bd99a2aaa94831a951e9.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/bc6554ac3dff4a59833e407db887f6e6.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c5db41a1f31d6baee7c69990811edb9f.png)
(2)过点
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c5db41a1f31d6baee7c69990811edb9f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d053b14c8588eee2acbbe44fc37a6886.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0f85fca60a11e1af2bf50138d0e3fe62.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d053b14c8588eee2acbbe44fc37a6886.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0f85fca60a11e1af2bf50138d0e3fe62.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/895dc3dc3a6606ff487a4c4863e18509.png)
①在(1)的条件下,在图形
![](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/8455657dde27aabe6adb7b188e031c11.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b4e9a6c7e94b2da8639a82d20cb9e7fc.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/8455657dde27aabe6adb7b188e031c11.png)
②如图2,已知点
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/39569b59f92771c8aaffbd978ff2bd07.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/46291790c278dbd49126a53e2151b652.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/895dc3dc3a6606ff487a4c4863e18509.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/74f1d746f5c042bf8451d2b12700716a.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0a45b16f576f2d24a05ec93810a20459.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0a6936d370d6a238a608ca56f87198de.png)
更新时间:2024-05-22 23:38:03
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相似题推荐
解答题-问答题
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【推荐1】如图,抛物线
与x轴交于A,B两点(A在B的左侧),与y轴交于点N,过A点的直线
与y轴交于点C,与抛物线
的另一个交点为
,已知P点为抛物线
上一动点(不与A、D重合).
![](https://img.xkw.com/dksih/QBM/editorImg/2024/3/17/58617212-9e51-4e2d-bff8-8267f5b43b8e.png?resizew=168)
(1)求抛物线的解析式;
(2)当点P在直线l上方的抛物线上时,过P点作
轴交直线l于点E,作
轴交直线l于点F,求
的最大值;
(3)设M为直线l上的动点,以
为一边且顶点为N,C,M,P的四边形是平行四边形,求所有符合条件的M点坐标.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0b940598cf82b4c61b7669a3998ef18c.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c1611cd585f404173fe8e8cf7e30dfee.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0b940598cf82b4c61b7669a3998ef18c.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5608bc6cb625f6adb5bb335543de682f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0b940598cf82b4c61b7669a3998ef18c.png)
![](https://img.xkw.com/dksih/QBM/editorImg/2024/3/17/58617212-9e51-4e2d-bff8-8267f5b43b8e.png?resizew=168)
(1)求抛物线的解析式;
(2)当点P在直线l上方的抛物线上时,过P点作
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/68b72ec08a413268ce36da3a273c0a4b.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/8dcab125fb79abb7259e6ee0aae23000.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/9292a1dc93f6a4ac6966d7ce9f9f2b33.png)
(3)设M为直线l上的动点,以
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e2a3f913906d27cd5ca71e67ab00a6fc.png)
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【推荐2】如图1,在平面直角坐标系中,抛物线
与
轴交于点
,与
轴交于点
.已知点
为
轴上一点,且
.
![](https://img.xkw.com/dksih/QBM/editorImg/2023/12/21/0090ea9e-27ae-4f91-bb55-72081da0d3ef.png?resizew=304)
(1)求抛物线的表达式;
(2)如图1,作
的角平分线交
轴于点
,点
为直线
上方抛物线上的一个动点,过点
作
交直线
于点
,过点
作
轴交直线
于点
,求
的最大值,并求出此时点
的坐标;
(3)如图2,将原抛物线沿
轴向左平移
个单位得到新抛物线
,新抛物线
交
轴于点
、
,点
为新抛物线
的对称轴与
轴的交点,点
为新抛物线
上一动点,使得
,请直接写出所有满足条件的点
的坐标.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/1ccaceaf82270dfbe697bf3d4a5ad1c1.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/81dea63b8ce3e51adf66cf7b9982a248.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/8b9e892f38b112ae9a4167cb9acaa0a0.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d053b14c8588eee2acbbe44fc37a6886.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c5db41a1f31d6baee7c69990811edb9f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/8455657dde27aabe6adb7b188e031c11.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d053b14c8588eee2acbbe44fc37a6886.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b510fcdadf29f8fca6b06f856dea28e0.png)
![](https://img.xkw.com/dksih/QBM/editorImg/2023/12/21/0090ea9e-27ae-4f91-bb55-72081da0d3ef.png?resizew=304)
(1)求抛物线的表达式;
(2)如图1,作
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/fba1315d450c8353c6611785f71546b5.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d053b14c8588eee2acbbe44fc37a6886.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ac047e91852b91af639feec23a9598b2.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/dad2a36927223bd70f426ba06aea4b45.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/03902478df1a55bc99703210bccab910.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/dad2a36927223bd70f426ba06aea4b45.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/13508fdc9e840fe612431360a6d451ee.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d50703c46b6153945d718b198f03b4b5.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a0ed1ec316bc54c37c4286c208f55667.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/dad2a36927223bd70f426ba06aea4b45.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/213144e25996b7fd3cd69d9c5ae56be2.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d50703c46b6153945d718b198f03b4b5.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2a30f3a8b673cc28bd90c50cf1a35281.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2bb8b2cc8edfe65e0fbe810dd560bde3.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/dad2a36927223bd70f426ba06aea4b45.png)
(3)如图2,将原抛物线沿
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/81dea63b8ce3e51adf66cf7b9982a248.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/41322821ce31416fdac8dd6e0aa41c71.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/9b4d2174f411d9db6ab7b2aea47818cb.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/9b4d2174f411d9db6ab7b2aea47818cb.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/81dea63b8ce3e51adf66cf7b9982a248.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e7c314398e26ffc7164b82946eeb4273.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/3953cec61ac602ce5eb59b7912352179.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/54a5d7d3b6b63fe5c24c3907b7a8eaa3.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/9b4d2174f411d9db6ab7b2aea47818cb.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/81dea63b8ce3e51adf66cf7b9982a248.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/895dc3dc3a6606ff487a4c4863e18509.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/9b4d2174f411d9db6ab7b2aea47818cb.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/07ea06d713d698d5554ebc18739ff61e.png)
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【推荐3】如图,已知直线y=﹣2x+4分别交x轴、y轴于点A、B,抛物线过A,B两点,抛物线y=﹣2x2+bx+c过A、B两点.
(1)求抛物线的解析式;
(2)如图1,点P是线段AB上一动点,过点P作PC⊥x轴于点C,交抛物线于点D,设其顶点为M,其对称轴交AB于点N.是否存在点P,使四边形MNPD为菱形?并说明理由;
(3)如图2,点E(0,1)在y轴上,连接AE,抛物线上是否存在一点F,使∠FEO与∠EAO互补,若存在,求点F的横坐标;若不存在,请说明理由.
(1)求抛物线的解析式;
(2)如图1,点P是线段AB上一动点,过点P作PC⊥x轴于点C,交抛物线于点D,设其顶点为M,其对称轴交AB于点N.是否存在点P,使四边形MNPD为菱形?并说明理由;
(3)如图2,点E(0,1)在y轴上,连接AE,抛物线上是否存在一点F,使∠FEO与∠EAO互补,若存在,求点F的横坐标;若不存在,请说明理由.
![](https://img.xkw.com/dksih/QBM/editorImg/2024/1/5/d17785f0-7602-4568-9165-b9e19b0845ac.png?resizew=302)
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【推荐1】在平面直角坐标系中,点O(0,0),点A(1,0).已知抛物线y=x2+mx﹣2m(m是常数),顶点为P.
(Ⅰ)当抛物线经过点A时,求顶点P的坐标;
(Ⅱ)若点P在x轴下方,当∠AOP=45°时,若函数值y>0,求对应自变量x的取值范围;
(Ⅲ)无论m取何值,该抛物线都经过定点H.当∠AHP=45°时,求抛物线的解析式.
(Ⅰ)当抛物线经过点A时,求顶点P的坐标;
(Ⅱ)若点P在x轴下方,当∠AOP=45°时,若函数值y>0,求对应自变量x的取值范围;
(Ⅲ)无论m取何值,该抛物线都经过定点H.当∠AHP=45°时,求抛物线的解析式.
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【推荐2】如图,抛物线
与x轴相交于点
和点B,与y轴相交于点
,作直线BC.
(1)求抛物线的解析式.
(2)将直线BC向上平移m个单位,记平移后的直线为l,当l与抛物线只有一个公共点D时,试求出m的值和D的坐标.
(3)在(2)的条件下,点F的坐标为
,点M在抛物线上,点N在直线BC上,当以D,F,M,N为顶点的四边形是平行四边形时,请直接写出点N的坐标.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/6ffa531ea65457360724ca2b5cd1cb21.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a0929421a6188c3122442866b0b85a5e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c052d7af2f98d95bac8725b608fba0fc.png)
![](https://img.xkw.com/dksih/QBM/editorImg/2023/7/12/34ff1d08-32f8-4b0a-bf58-88cc21c0fe85.jpg?resizew=112)
(1)求抛物线的解析式.
(2)将直线BC向上平移m个单位,记平移后的直线为l,当l与抛物线只有一个公共点D时,试求出m的值和D的坐标.
(3)在(2)的条件下,点F的坐标为
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/1c050e4c6cbc6dae67623cd778728e2d.png)
![](https://img.xkw.com/dksih/QBM/editorImg/2023/7/12/2ad8422b-26d1-4825-970f-e5d7b97d6c35.jpg?resizew=113)
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