如图,二次函数
的图象与
轴交于
和
两点,与
轴交于点
,点
是直线
下方的抛物线上一动点,过点
作
轴于点
,交直线
于点
.
和点
的坐标;
(2)求线段
的最大值及此时点
的坐标;
(3)当
最大时,在二次函数的图象上是否存在点
,使以点
为顶点的三角形是直角三角形?若存在,求点
的坐标,若不存在,请说明理由.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b73ec2e51e8bf082ec95b5ce8348de68.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/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/19f00d0ff8dd38da17167cf9b789eec0.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/8455657dde27aabe6adb7b188e031c11.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/60ef95894ceebaf236170e8832dcf7e3.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/7f9e8449aad35c5d840a3395ea86df6d.png)
(2)求线段
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/fc5adb5eb60ae4435a12d93854066298.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/dad2a36927223bd70f426ba06aea4b45.png)
(3)当
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/fc5adb5eb60ae4435a12d93854066298.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/acc290b44635265137fdf13146b6a6d9.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ad74f90f6e6893d41d31b52407869da9.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/acc290b44635265137fdf13146b6a6d9.png)
2023·贵州贵阳·二模 查看更多[4]
2023年贵州省贵阳市花溪区九年级综合测试卷数学模拟试题2024年山东省济南市九年级中考数学模拟试题(五)(已下线)专题11 二次函数与几何问题(二)(六大热点题型归纳)-2024年中考数学二轮热点题型归纳与变式演练(云南专用) 2024年四川省德阳市绵竹市九年级中考二模数学试题
更新时间:2024-03-20 19:10:08
|
相似题推荐
解答题-应用题
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较难
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【推荐1】已知抛物线
.
(1)当
时,求该抛物线的对称轴和顶点坐标;
(2)若已知点
,
,当抛物线与线段
有且只有一个交点时,求a的取值范围.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/46f39fc6459b00712f343c11d137e997.png)
(1)当
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/6b108ab31cc093f03cf48ad65429889e.png)
(2)若已知点
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7941eefc4e262e5144d8dfe74f58fc5b.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a812f75691c1b7e1062c11aeabf1e8e1.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b79dd200766db27fb90d6bd1992cf658.png)
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【推荐2】已知抛物线
(
为常数,
)与
轴相交于
,
两点(点
在点
的左侧),与
轴相交于点
.
(1)若点
的坐标为
,求该抛物线的顶点坐标;
(2)当
时,求
的值;
(3)若点
为
轴上方对称轴右侧抛物线上的一个动点,
为
轴正半轴上的一点,过点
作抛物线对称轴的垂线,垂足为
,连接
,当
的最小值为17时,求
的值.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/58d88bbd34102b55fa928e8ff83f0d52.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0fc2ac0d7b8a2d9c539588a3a7e3791c.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/67ca5fd57c2c2fcc3c7a574fdd1467d9.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/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)
(1)若点
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c5db41a1f31d6baee7c69990811edb9f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/fb0e705301752424a492f6277ed7774e.png)
(2)当
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/1be86349e06431647f8e359d9bd07700.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2c94bb12cee76221e13f9ef955b0aab1.png)
(3)若点
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/6eed53072913251fb3de524afcbf85a9.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/81dea63b8ce3e51adf66cf7b9982a248.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ac047e91852b91af639feec23a9598b2.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/54a5d7d3b6b63fe5c24c3907b7a8eaa3.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e31ae0f1df5b91f2077b73b8266b3e0e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/dec99f5e905c28aa71c9174aa8336884.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2c94bb12cee76221e13f9ef955b0aab1.png)
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【推荐1】矩形ABCD满足BC=2AB,E、F分别为AD、BC边上的动点,连接EF,沿EF将四边形DEFC翻折至四边形GEFH.
(1)①如图1,若点G落在矩形ABCD内,当∠BFE=57°时,直接写出∠AEG= .
![](https://img.xkw.com/dksih/QBM/2022/5/19/2982823997693952/3076847614099456/STEM/16cbbebfa2254365b4771778c7a213b2.png?resizew=183)
②如图2,若点G落在AB边上,当G为AB中点时,直接写出sin∠BFH= .
![](https://img.xkw.com/dksih/QBM/2022/5/19/2982823997693952/3076847614099456/STEM/144f02b8b54843e69a939ccc2695568a.png?resizew=185)
(2)如图3,若点G落在AB边上,且满足AB=nAG,
![](https://img.xkw.com/dksih/QBM/2022/5/19/2982823997693952/3076847614099456/STEM/1bb70d3bd65740059f2e58e17e6eba77.png?resizew=185)
①求
的值(用含n的代数式表示);
②在E、F运动的过程中,直接写出
的值(用含n的代数式表示)
(1)①如图1,若点G落在矩形ABCD内,当∠BFE=57°时,直接写出∠AEG= .
![](https://img.xkw.com/dksih/QBM/2022/5/19/2982823997693952/3076847614099456/STEM/16cbbebfa2254365b4771778c7a213b2.png?resizew=183)
②如图2,若点G落在AB边上,当G为AB中点时,直接写出sin∠BFH= .
![](https://img.xkw.com/dksih/QBM/2022/5/19/2982823997693952/3076847614099456/STEM/144f02b8b54843e69a939ccc2695568a.png?resizew=185)
(2)如图3,若点G落在AB边上,且满足AB=nAG,
![](https://img.xkw.com/dksih/QBM/2022/5/19/2982823997693952/3076847614099456/STEM/1bb70d3bd65740059f2e58e17e6eba77.png?resizew=185)
①求
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/6bf2e8901c3b3d48660090eda2454ed2.png)
②在E、F运动的过程中,直接写出
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/1112f34f942c1b7cf0925afbc7a40aa1.png)
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名校
解题方法
【推荐2】已知:如图AB为⊙O直径,PA切⊙O于点A,且PA=AB,连接PO,过点A作AC⊥PO于D,交⊙O于点C,连接PB交⊙O于点E,连接DE、BC.
(1)求tan∠BAC的值.
(2)若AC=4,求DE.
(1)求tan∠BAC的值.
(2)若AC=4,求DE.
![](https://img.xkw.com/dksih/QBM/editorImg/2022/8/8/8107c516-8739-4bb2-80b7-ae94ddc69004.png?resizew=203)
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名校
【推荐1】已知抛物线
与
轴交于点
,
(点
在点
的左边),与
轴交于点
.
(1)若
,求出点
的坐标;
(2)求出点
,
的坐标(用含
的式子表示);
(3)若点
是线段
上一点,过点
作
轴的垂线交抛物线于点
,交直线
于点
,当线段
长的最大值为
时,求
的取值范围.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b7487080430398baf30bb7d2e07c5ae2.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/47ffb694021b52653de5141ae27ba6d0.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0914b68f106a912420705b2f3928ca42.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/1da9dcf6c319174c9ea2b1ceaed1649a.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0914b68f106a912420705b2f3928ca42.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/1da9dcf6c319174c9ea2b1ceaed1649a.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/9fcf9bfbf771cb6118f8e631724314e3.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ce1132157a33c82610c2d5035493d024.png)
(1)若
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/dedff09ac873e40c3ee0ce3ecf2fa032.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/1da9dcf6c319174c9ea2b1ceaed1649a.png)
(2)求出点
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/1da9dcf6c319174c9ea2b1ceaed1649a.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ce1132157a33c82610c2d5035493d024.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/3ab4717e4827480f0f6f4ded85e52eab.png)
(3)若点
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0fc5c19ac440746be97d8b46af5d288a.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f52a58fbaf4fea03567e88a9f0f6e37e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0fc5c19ac440746be97d8b46af5d288a.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/47ffb694021b52653de5141ae27ba6d0.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/00a28be4d5a16cf245f6fa7c4088fee4.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/60ef95894ceebaf236170e8832dcf7e3.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/fe9eeee83b4b7c6ceac7828ff534ce15.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/411461db15ee8086332c531e086c40c7.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0d68cf2239f6864b2aba50bd252e0c44.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/3ab4717e4827480f0f6f4ded85e52eab.png)
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解答题-证明题
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较难
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【推荐2】如图,抛物线y=
x2+bx-2与x轴交于A、B两点,与y轴交于C点,且A(一1,0).
(1)求抛物线的解析式及顶点D的坐标;
(2)判断△ABC的形状,证明你的结论;
(3)点M是x轴上的一个动点,当△DCM的周长最小时,求点M的坐标.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f89eef3148f2d4d09379767b4af69132.png)
![](https://img.xkw.com/dksih/QBM/editorImg/2023/11/30/4d7b471a-0c3f-4b64-ab71-7f7cd7aafdd3.png?resizew=163)
(1)求抛物线的解析式及顶点D的坐标;
(2)判断△ABC的形状,证明你的结论;
(3)点M是x轴上的一个动点,当△DCM的周长最小时,求点M的坐标.
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解答题-证明题
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【推荐1】已知抛物线
的解析式为
,直线
的解析式为![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c63a15357c758fe7722e7d82075ef662.png)
(1)定义:抛物线上的点到直线距离的最小值叫做抛物线到该条直线的距离,取到直线距离最小的抛物线上的点叫做距离点.求证:无论
为何值,抛物线
到直线
的距离都是
;
(2)如图,若抛物线
经过点
和点
与
轴交于点
.过顶点
作
轴,垂足为
,点
是线段
上的一点,若
是以
为底角的等腰三角形,求点
的坐标.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b1241216f3c1cb5e73043dd1037f556d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0cd7470d910eb10eb2ba5c0c68afd8fe.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0f85fca60a11e1af2bf50138d0e3fe62.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c63a15357c758fe7722e7d82075ef662.png)
(1)定义:抛物线上的点到直线距离的最小值叫做抛物线到该条直线的距离,取到直线距离最小的抛物线上的点叫做距离点.求证:无论
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/cb5f8b4015e97334de3537a88c26fbdd.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b1241216f3c1cb5e73043dd1037f556d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0f85fca60a11e1af2bf50138d0e3fe62.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c95b6be4554f03bf496092f1acdfbb89.png)
(2)如图,若抛物线
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b1241216f3c1cb5e73043dd1037f556d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/311497849126f1aaf1da0ec75602eabf.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/76d03fa28c117649b0fdfe17eed7b583.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/3d84acd3c96e20c0ce064aac125f7fe2.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2a30f3a8b673cc28bd90c50cf1a35281.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a0ed1ec316bc54c37c4286c208f55667.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e6e490f703eb6c9bb1278c78ebc2d661.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/30f221c6eff7ed25794b7fe387bee22f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e13173e15e465057714d8844af668252.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a0ed1ec316bc54c37c4286c208f55667.png)
![](https://img.xkw.com/dksih/QBM/2021/4/26/2708318545240064/2779691235991552/STEM/2ced1231-c613-474b-a0bf-b22a503981ec.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,抛物线与
轴交于
两点,与
轴交于点
连接
,已知![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d5c3521af22d59a5181ae623636afe93.png)
,且
,
![](https://img.xkw.com/dksih/QBM/editorImg/2023/2/25/8dfc3755-ffec-419c-9c28-0e55ad787a3e.png?resizew=153)
(1)求抛物线的解析式;
(2)若点
为直线
下方抛物线上一动点,过点
作
轴交
于
点,连接![](https://staticzujuan.xkw.com/quesimg/Upload/formula/343fdb74460b7801a31b9f7a0ba25263.png)
①若
,求此时点
的坐标;
②若点
关于直线
的对称点
恰好落在
轴上,求此时点
的坐标.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/81dea63b8ce3e51adf66cf7b9982a248.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e52586ca2a3b783bc8092415e2d4bf6d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d053b14c8588eee2acbbe44fc37a6886.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/44f7606459554b3a362dd12f9f7faec3.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0dc5c9827dfd0be5a9c85962d6ccbfb1.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d5c3521af22d59a5181ae623636afe93.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a0929421a6188c3122442866b0b85a5e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/6829be2976e72e64ff9a83565355ca6c.png)
![](https://img.xkw.com/dksih/QBM/editorImg/2023/2/25/8dfc3755-ffec-419c-9c28-0e55ad787a3e.png?resizew=153)
(1)求抛物线的解析式;
(2)若点
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/8455657dde27aabe6adb7b188e031c11.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0dc5c9827dfd0be5a9c85962d6ccbfb1.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/8455657dde27aabe6adb7b188e031c11.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/edcd5bee2742b4ad8ac7fc379df22cf0.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0dc5c9827dfd0be5a9c85962d6ccbfb1.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2a30f3a8b673cc28bd90c50cf1a35281.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/343fdb74460b7801a31b9f7a0ba25263.png)
①若
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a2b1f1d63a42f33184cca735daf43717.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/8455657dde27aabe6adb7b188e031c11.png)
②若点
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2a30f3a8b673cc28bd90c50cf1a35281.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/9d78abbad68bbbf12af10cd40ef4c353.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d3b1a5427d8ff23df0f3ec194756c84c.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d053b14c8588eee2acbbe44fc37a6886.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/8455657dde27aabe6adb7b188e031c11.png)
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解答题-问答题
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【推荐3】已知抛物线:y=ax2﹣2ax+c(a>0)过点(﹣1,0)与(0,﹣3).直线y=x﹣6交x轴、y轴分别于点A、B.
(1)求抛物线的解析式;
(2)若点P是抛物线上的任意一点.连接PA,PB,使得△PAB的面积最小,求△PAB的面积最小时,P的横坐标;
(3)作直线x=t分别与抛物线y=ax2﹣2ax+c(a>0)和直线y=x﹣6交于点E,F,点C是抛物线对称轴上的任意点,若△CEF是以点E或点F为直角顶点的等腰直角三角形,求点C的纵坐标.
(1)求抛物线的解析式;
(2)若点P是抛物线上的任意一点.连接PA,PB,使得△PAB的面积最小,求△PAB的面积最小时,P的横坐标;
(3)作直线x=t分别与抛物线y=ax2﹣2ax+c(a>0)和直线y=x﹣6交于点E,F,点C是抛物线对称轴上的任意点,若△CEF是以点E或点F为直角顶点的等腰直角三角形,求点C的纵坐标.
![](https://img.xkw.com/dksih/QBM/2021/12/8/2867909986041856/2868612945838080/STEM/b4afa81c-c2d7-476c-8955-5157c0f9b368.png?resizew=491)
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