如图,在平面直角坐标系中,抛物线与x轴交于
两点(点A在点B的左侧),与y轴交于点C,连接
,点P为直线
上方抛物线上一动点,连接
交
于点Q.
(1)求抛物线的函数表达式;
(2)当
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7945f52511981402a8e648fb1b38796d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7945f52511981402a8e648fb1b38796d.png)
(3)把抛物线
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b0c9800e4b992044d16681e77ff6563c.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/60ef95894ceebaf236170e8832dcf7e3.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2967337e3fcb228dded64ab0c41a17e0.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/9b4d2174f411d9db6ab7b2aea47818cb.png)
22-23九年级下·重庆·阶段练习 查看更多[5]
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更新时间:2023-11-03 20:36:29
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解答题-问答题
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困难
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【推荐1】如图①,抛物线
与x轴相交于O、A两点,直线
与y轴交于B点,与该抛物线交于A,D两点,已知点D横坐标为
.
![](https://img.xkw.com/dksih/QBM/editorImg/2024/3/14/25532052-183c-4cae-a091-b69802a9a9e3.png?resizew=396)
(1)求这条抛物线的解析式;
(2)如图①,在线段
上有一动点H(不与O、A重合),过H作x轴的垂线分别交
于P点,交抛物线于Q点,若x轴把
分成两部分的面积之比为
,求H点的坐标;
(3)如图②,在抛物线上是否存在点C,使
为直角三角形?若存在,直接写出点C的坐标;若不存在,请说明理由.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a90385c676848de67293e3ed6bc000fe.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ae652daf6059ff386f99bef2210518c5.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/acbc6a613224461ade69362d46550474.png)
![](https://img.xkw.com/dksih/QBM/editorImg/2024/3/14/25532052-183c-4cae-a091-b69802a9a9e3.png?resizew=396)
(1)求这条抛物线的解析式;
(2)如图①,在线段
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ef4113c492885ba7c47fe42ac792578f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f52a58fbaf4fea03567e88a9f0f6e37e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0fdc02f00cf00a6dfd88b53a90f1f7a4.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/37d65e051e943ab28fa57aee2fb57994.png)
(3)如图②,在抛物线上是否存在点C,使
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/15c0dbe3c080c4c4636c64803e5c1f76.png)
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【推荐2】在平面直角坐标系中,抛物线
(
是常数)经过点
.点
在抛物线上,且点
的横坐标为
(
),点
的坐标为
.
(1)求该抛物线对应的函数表达式及顶点坐标;
(2)过点
作
轴于点
,以
、
为邻边作
.
①当
时,求
的面积;
②若
,当抛物线在
内部的点的纵坐标
随
的增大而减小,或者
随
的增大而增大时,求
的取值范围;
③若
,当
时,直接写出
的取值范围.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/953bfdc80d6d6f217238486537b9ae2a.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2c94bb12cee76221e13f9ef955b0aab1.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/cb442fb1fe1a5d9768cf11c3e1b7ec5b.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5963abe8f421bd99a2aaa94831a951e9.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5963abe8f421bd99a2aaa94831a951e9.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/294f5ba74cdf695fc9a8a8e52f421328.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0baedc4d7e690ab3f7d80d30ba0a9efe.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7f9e8449aad35c5d840a3395ea86df6d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5349ff6c871bfac059faaacb6ff76df0.png)
(1)求该抛物线对应的函数表达式及顶点坐标;
(2)过点
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5963abe8f421bd99a2aaa94831a951e9.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5862fb8bb359e111a5896f1389ac1126.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c5db41a1f31d6baee7c69990811edb9f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/60ef95894ceebaf236170e8832dcf7e3.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/6b1bd1adfe4cc6566218f19970c2fd3b.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/fd9e7a416169d055ae0bfee19676f0f4.png)
①当
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e94f16d5ed858699bfea5039a7bf8ae6.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ab2a2834d80ff574e79eae8ca8d4e94f.png)
②若
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/65d1eec645764636c0e23b05e8f93234.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/fd9e7a416169d055ae0bfee19676f0f4.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d053b14c8588eee2acbbe44fc37a6886.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/81dea63b8ce3e51adf66cf7b9982a248.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d053b14c8588eee2acbbe44fc37a6886.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/81dea63b8ce3e51adf66cf7b9982a248.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/294f5ba74cdf695fc9a8a8e52f421328.png)
③若
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0bd8ba8bfcbf4c2e2c47e83403bd8902.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/50a0624ee37123671df3156f78a3f7f9.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/294f5ba74cdf695fc9a8a8e52f421328.png)
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解答题-问答题
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困难
(0.15)
名校
解题方法
【推荐1】如图,在平面直角坐标系中,点
为坐标原点,抛物线
交
轴于
、
两点,交
轴于点
,
.
(1)求抛物线的解析式;
(2)如图2,
为第一象限内抛物线上一点,
的面积为3时,且
,求
点坐标;
(3)如图3,在(2)的条件下,
、
为抛物线上的点,且两点关于抛物线对称轴对称,过
作
轴垂线交过点
且平行于
轴的直线于
,
交抛物线于
,延长
至
,连接
,
,当线段
时,求点
的坐标.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/1dde8112e8eb968fd042418dd632759e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/9a42ec7c855603e8089f6e96be1ee45d.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/0c284ccb6f4ee7a8690013d2ce16e226.png)
(1)求抛物线的解析式;
(2)如图2,
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/dad2a36927223bd70f426ba06aea4b45.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/357265c532428e886a643e8e653eec9e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/87e9c33cb6a82b308182d3bd50fe2546.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/dad2a36927223bd70f426ba06aea4b45.png)
(3)如图3,在(2)的条件下,
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/8455657dde27aabe6adb7b188e031c11.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2a30f3a8b673cc28bd90c50cf1a35281.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/8455657dde27aabe6adb7b188e031c11.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/81dea63b8ce3e51adf66cf7b9982a248.png)
![](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/acc290b44635265137fdf13146b6a6d9.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b15febfda66e733f14aa7115ed4343a8.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4aa0df7f1e45f9de29e802c7f19a4f64.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c118858379800688c993a8b61270b356.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/73465a1f9aa03481295bf6bd3c6903ac.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c55caf68f1424c03b027fa267c16bf51.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/12e5c037a645208584cbee17d1cf3fb0.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7a264db655ec6e6e908989bd0bf1baf8.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/8455657dde27aabe6adb7b188e031c11.png)
![](https://img.xkw.com/dksih/QBM/2020/4/2/2439889458331648/2440126993604608/STEM/d0a0110ca7ba41e1a5171291d8b27789.png?resizew=427)
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困难
(0.15)
【推荐2】如图1,一张四边形纸片ABCD中,AB
CD,∠A+∠B=90°,M为AB边上点,MB=MC,已知AD=8,CD=5,BC=6,如图2,沿MC把这张纸片剪成△B1C1M1与四边形AM2C2D,将纸片△B1C1M1,沿射线BA方向平移,当点B1与点A重合时,停止平移.
![](https://img.xkw.com/dksih/QBM/editorImg/2022/10/14/3a4626ba-b3c2-4922-af8b-f04c6d7a56b5.png?resizew=346)
(1)求图1中,AB的长度;
(2)如图3,过点D作DG
M2C2,且与AB交于点G,当点M在线段AG(不含端点)上时,AD与M1C1交于点E,B1C1与DG交于点F,试判断四边形C1DFE的形状,并说明理由;
(3)设平移距离M1M2=x,△B1C1M1与四边形AM2C2D重叠部分面积为y,请写出y与x的函数关系式以及自变量的取值范围.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2a9bfa68259d7a331be323b2038d628a.png)
![](https://img.xkw.com/dksih/QBM/editorImg/2022/10/14/3a4626ba-b3c2-4922-af8b-f04c6d7a56b5.png?resizew=346)
(1)求图1中,AB的长度;
(2)如图3,过点D作DG
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2a9bfa68259d7a331be323b2038d628a.png)
(3)设平移距离M1M2=x,△B1C1M1与四边形AM2C2D重叠部分面积为y,请写出y与x的函数关系式以及自变量的取值范围.
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解答题-证明题
|
困难
(0.15)
【推荐1】已知抛物线
:
经过点
,与x轴交于
、B两点.
的解析式;
(2)如图1,已知
,以
为顶点作平行四边形,若
两点都在抛物线上,求
两点的坐标;
(3)如图2,将抛物线
沿
轴平移,使其顶点在
轴上,得到抛物线
,过定点
的直线交抛物线
于
两点,过
的直线
与抛物线
都只有唯一公共点,求证:
点在定直线上运动.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b1241216f3c1cb5e73043dd1037f556d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d039de5bf810e3ff6b0b6096fa48d462.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/3654254401fc902c3cb4912969f21f88.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a0929421a6188c3122442866b0b85a5e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b1241216f3c1cb5e73043dd1037f556d.png)
(2)如图1,已知
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d5c2a2a2160cb0906e5b2c631b1c07dd.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b00ce38e418cd0ce0efeaca6bf2c697f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/8c29a7e8eea08197bf53164a560bee58.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/8c29a7e8eea08197bf53164a560bee58.png)
(3)如图2,将抛物线
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b1241216f3c1cb5e73043dd1037f556d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/81dea63b8ce3e51adf66cf7b9982a248.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d053b14c8588eee2acbbe44fc37a6886.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/23f3ffe7abc59e2f65d827c8eab8d36a.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/eb7b443d5a8c7a77ababfd924f091eb5.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/23f3ffe7abc59e2f65d827c8eab8d36a.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e6670479a0083dd2dfd5ad55b47b1ab6.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e6670479a0083dd2dfd5ad55b47b1ab6.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d181a958c980313dda4de55092d0aafe.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/23f3ffe7abc59e2f65d827c8eab8d36a.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4aa0df7f1e45f9de29e802c7f19a4f64.png)
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名校
【推荐2】如图1,二次函数
与
轴交于点
、点
(点
在点
左侧),与
轴交于点
,
.
![](https://img.xkw.com/dksih/QBM/editorImg/2022/9/19/005d49e0-acd8-4af6-945c-e6d54b980c58.png?resizew=752)
(1)求二次函数解析式;
(2)如图2,点
是直线
上方抛物线上一点,
轴交
于
,
交
轴于点
,求
的最大值及此时点
的坐标;
(3)在(2)的条件下,当
取最大值时,连接
,将
绕原点
顺时针旋转
至
;将原抛物线沿射线
方向平移
个单位长度得到新抛物线,点
在新抛物线的对称轴上,点
为平面内任意一点,当以点
,
,
,
为顶点的四边形是矩形时,请直接写出点
的坐标.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/8352b2e643a7ce605334f1b0e572bfb0.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/81dea63b8ce3e51adf66cf7b9982a248.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/913f78382630e50543e5f7192cae3ed3.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/c052d7af2f98d95bac8725b608fba0fc.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ceb0cd6bd9b3f883ed957628ceb69054.png)
![](https://img.xkw.com/dksih/QBM/editorImg/2022/9/19/005d49e0-acd8-4af6-945c-e6d54b980c58.png?resizew=752)
(1)求二次函数解析式;
(2)如图2,点
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/dad2a36927223bd70f426ba06aea4b45.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0dc5c9827dfd0be5a9c85962d6ccbfb1.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/70b32f59522eea44b24cdd4c2bc0406e.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/470b90ad482ce443d5546e662a0c62b5.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/81dea63b8ce3e51adf66cf7b9982a248.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2a30f3a8b673cc28bd90c50cf1a35281.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5179ae25188bbd8f7690b92e7d8516b6.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/dad2a36927223bd70f426ba06aea4b45.png)
(3)在(2)的条件下,当
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5179ae25188bbd8f7690b92e7d8516b6.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/48f3c9abbd78e9a6840ee5f30381daac.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/177678001b2ccde1db8f57fa5e017002.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/1dde8112e8eb968fd042418dd632759e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c02b54dc6b3e1bb6544f47d4c8743fcf.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a018a1b8aee11466402b785d2ba25399.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/9abaeba15f3abdd877bc701af52c5cd9.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/700762875cb4f15b556a72f10a42ac9f.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/ac047e91852b91af639feec23a9598b2.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/54a5d7d3b6b63fe5c24c3907b7a8eaa3.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/3557809c066e68395b614535a7675e76.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b977da2be0fc44742bd313eea1c30997.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/54a5d7d3b6b63fe5c24c3907b7a8eaa3.png)
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解答题-计算题
|
困难
(0.15)
名校
【推荐1】如图,抛物线
经过点
和
.
(2)若点
为第二象限内抛物线上一点,连接
,点P为线段
下方抛物线上一点,过点P作
交y轴于点D,求
的最大值及此时点P的坐标;
(3)在(2)的条件下,连接
、
,将原抛物线沿射线
方向平移
个单位长度,若点M为平移后新抛物线上一点,过点M作
轴于点N,直接写出所有使得
相似于
的点M的横坐标.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c468dc5cc34c14a188493a21019e8f83.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/42a2b8b43e1fe82fc439d145e91b860c.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a12a3405de25a8fd489d061186d8e715.png)
(2)若点
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/3a1690d12eac06efdd6da508c033ed89.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/60ef95894ceebaf236170e8832dcf7e3.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/60ef95894ceebaf236170e8832dcf7e3.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/347f730ec6563a05b6de6f0800cb2241.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a2631c254dbf40ad48dca477b6d405cc.png)
(3)在(2)的条件下,连接
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f52a58fbaf4fea03567e88a9f0f6e37e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0dc5c9827dfd0be5a9c85962d6ccbfb1.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7dea2ae9d515f9ab351ad72306b776ee.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/95bacae35b6e16a0a33c2bdc6bc07df7.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ff5ec3aef789fc1412ff76b510b48018.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/98013a5042685a1db94249e70c62c09a.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/15c0dbe3c080c4c4636c64803e5c1f76.png)
您最近一年使用:0次
解答题-问答题
|
困难
(0.15)
【推荐2】如图1,抛物线
与x轴交于点
,
,且经过点
.
(2)若M、N分别是边
、
上的动点,且
,Q为线段
的中点,
.
①以
为一边,在
的上方作正方形
,当点H落在该抛物线上时,求此时点H的横坐标;
②如图2,P的坐标为
,将
绕点P顺时针旋转
到
,若
恰好落在边
上,直接写出此时m的值.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a90385c676848de67293e3ed6bc000fe.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7a94bcd8cd7c61d4f8110b1de1019332.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0a768354401e6aea9be706338ef0a1f7.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f5e2352dc2259bffb8abc0fabeca116d.png)
(2)若M、N分别是边
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/60ef95894ceebaf236170e8832dcf7e3.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b90e0f35eda1a729fed485f83da5ea9d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a07378a018dd27e9edcb9f39108ba886.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/411461db15ee8086332c531e086c40c7.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/31086e1106685d082d6bab46ead1edbe.png)
①以
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/411461db15ee8086332c531e086c40c7.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/411461db15ee8086332c531e086c40c7.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a315e4b5963127bf8550cde03ca1966d.png)
②如图2,P的坐标为
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c720543357e1379f10bdd0156298836c.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/6c8ffe24cf9f327aeb241225ab15ab1a.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f8dd0c52aca1675c17b9a019aa7901e3.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/9c1afee715f2a04fac1edfaa44e8b58d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/28b1ba4307cfde9b424d468bfcdf6c5a.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0dc5c9827dfd0be5a9c85962d6ccbfb1.png)
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