在平面直角坐标系中,点
是坐标原点,抛物线
与
轴交于点
,
与
轴交于点
,
.
(2)已知点
在抛物线上,且在第二象限,连接
交
轴于点
.
①若
的长为
,
点的横坐标为
,求
与
的函数关系式;
②取
的中点
,连接
,当
时,求点
的坐标.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/1dde8112e8eb968fd042418dd632759e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0a0e1ec848b8809cc9bea9cb6896e282.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/9bdce4f15c156b8235fdec93bb4cf012.png)
(2)已知点
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/8455657dde27aabe6adb7b188e031c11.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d40b319212a7e7528b053e1c7097e966.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d053b14c8588eee2acbbe44fc37a6886.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2a30f3a8b673cc28bd90c50cf1a35281.png)
①若
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4eedae8d316c76e3d0b451256de03fb9.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5c02bc0c74292b1e8f395f90935d3174.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/8455657dde27aabe6adb7b188e031c11.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/36a1b09c653185842513e24ebba60bb3.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5c02bc0c74292b1e8f395f90935d3174.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/36a1b09c653185842513e24ebba60bb3.png)
②取
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d40b319212a7e7528b053e1c7097e966.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a0ed1ec316bc54c37c4286c208f55667.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/6aa2b5e09f8ec785c59900a529390a02.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/880efdb2b4ac4861ad808e0162d082be.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/8455657dde27aabe6adb7b188e031c11.png)
更新时间:2024-05-22 22:17:52
|
相似题推荐
解答题-问答题
|
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(0.4)
【推荐1】如图,已知点
,点
,将线段
绕点
顺时针旋转
,点
落在点
处,点
是
轴上一动点.
的解析式;
(2)连结
、
.若
,求点
的坐标;
(3)连结
、
交线段
于点
,且
.求
的面积.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/edcbc328ed803646d8646560050ed0ad.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/978afb1da6f1fec85e2b09eeb7ee6403.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/60ef95894ceebaf236170e8832dcf7e3.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c5db41a1f31d6baee7c69990811edb9f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c02b54dc6b3e1bb6544f47d4c8743fcf.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/8455657dde27aabe6adb7b188e031c11.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/81dea63b8ce3e51adf66cf7b9982a248.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0dc5c9827dfd0be5a9c85962d6ccbfb1.png)
(2)连结
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7f9e8449aad35c5d840a3395ea86df6d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/8455657dde27aabe6adb7b188e031c11.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2c631670e02d2a38e9c78708a3916140.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/8455657dde27aabe6adb7b188e031c11.png)
(3)连结
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5963abe8f421bd99a2aaa94831a951e9.png)
![](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/acc290b44635265137fdf13146b6a6d9.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7e22f57f9ce699c8249cfb0b3892f317.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/661ff55b5ebbadfb600989af3cfce2fd.png)
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【推荐2】已知抛物线
与x轴交于
,
两点,经过点
,与y轴交于点
.
(1)求抛物线的函数解析式;
(2)若点M是x轴上位于点A与点B之间的一个动点(含点A与点B),过点M作x轴的垂线分别交抛物线和直线
于点E、点F.求线段
的最大值.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ddc26f6d07d92c6ede81e82f4a252ba1.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7c0b352082378e8dfb7cdc191b4056e6.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7291b3d921f595f28960abcdce6dfbed.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/644f786aa0ed4773f7490e741468ddd0.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c5db41a1f31d6baee7c69990811edb9f.png)
(1)求抛物线的函数解析式;
(2)若点M是x轴上位于点A与点B之间的一个动点(含点A与点B),过点M作x轴的垂线分别交抛物线和直线
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0dc5c9827dfd0be5a9c85962d6ccbfb1.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/49b50357a6545cae8348e3059312f520.png)
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【推荐1】将边长为4的正方形ABCD置于平面直角坐标系中,使AB边落在x轴的正半轴上且A点的坐标是
,直线y=x与线段CD交于点E.
(1)直线
经过点C且与
轴交于点F.求四边形AFCD的面积.
(2)若直线
经过点E和点F,求直线
的解析式.
(3)若直线
经过点
且与直线
平行,将(2)中直线
沿着
轴向上平移1个单位得到直线
,直线
交
轴于点M,交直线
于点N,求
的面积.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/53a948d2f7732d7f03e986c63712089b.png)
(1)直线
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/8606ab8dae33919dc6417ecdbb5c80b5.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/81dea63b8ce3e51adf66cf7b9982a248.png)
(2)若直线
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2e9b0f5f44abbc6544a2f672b025b013.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2e9b0f5f44abbc6544a2f672b025b013.png)
(3)若直线
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/3f6f17bc385bafb37e8f964e5eb99cd0.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/bdb56316775c24f4a3680d694f3463bd.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e4a2b4c212450b2a0f77e042c8da13dd.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2e9b0f5f44abbc6544a2f672b025b013.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d053b14c8588eee2acbbe44fc37a6886.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c9fce9427c9b17e4d3cda0c3ff3e2e14.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c9fce9427c9b17e4d3cda0c3ff3e2e14.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/81dea63b8ce3e51adf66cf7b9982a248.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/3f6f17bc385bafb37e8f964e5eb99cd0.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/1dac9d2beaf94604080592a510cda905.png)
![](https://img.xkw.com/dksih/QBM/2019/10/27/2320862730248192/2325841973485568/STEM/ece63b5c51db4d369461c744ff80547a.png?resizew=200)
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【推荐2】如图1,在平面直角坐标系中有一点A(2,2),将点A向左平移3个单位,再向下平移6个单位得到点B,直线l过点A、B,交x轴于点C.交y轴于点D,P是直线l上的一个动点,通过研究发现直线l上所有点的横坐标x与纵坐标y都是二元一次方程
的解.
(1)直接写出点B,C,D的坐标:B ,C ,D ;
(2)①求三角形AOB的面积;
②当PA=2PB时,求点P的坐标;
(3)如图2,将D点向左平移m个单位(m>1)到E,连接CE,DG平分∠CDE交CE于点G,已知点F为x轴正半轴上一动点(不与C点重合),射线EF交直线AB交于点M,交直线DG于点N,试探究F点在运动过程中∠DNM、∠CFE、∠CME之间是否有某种确定的数量关系,若存在,请写出对应关系式并证明;若不存在,请说明理由.
![](https://img.xkw.com/dksih/QBM/2021/5/8/2716723741958144/2781681308573696/STEM/dc7e7990-b4f4-4d11-961d-abd1abf3e5ee.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0b360624d10f31d0b44ec86f06fa40d9.png)
(1)直接写出点B,C,D的坐标:B ,C ,D ;
(2)①求三角形AOB的面积;
②当PA=2PB时,求点P的坐标;
(3)如图2,将D点向左平移m个单位(m>1)到E,连接CE,DG平分∠CDE交CE于点G,已知点F为x轴正半轴上一动点(不与C点重合),射线EF交直线AB交于点M,交直线DG于点N,试探究F点在运动过程中∠DNM、∠CFE、∠CME之间是否有某种确定的数量关系,若存在,请写出对应关系式并证明;若不存在,请说明理由.
![](https://img.xkw.com/dksih/QBM/2021/5/8/2716723741958144/2781681308573696/STEM/dc7e7990-b4f4-4d11-961d-abd1abf3e5ee.png)
![](https://img.xkw.com/dksih/QBM/2021/5/8/2716723741958144/2781681308573696/STEM/f323acff-80b6-4457-97ac-c88238579a9e.png)
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【推荐1】已知抛物线
的顶点坐标为
,与y轴的交点型标为
.
![](https://img.xkw.com/dksih/QBM/editorImg/2023/3/18/e925c889-f7a1-4d2f-be6c-1de3db720f2f.png?resizew=178)
(1)求该抛物线的解析式;
(2)点A、B在x轴上方的抛物线上,点A在点B左侧,点C、D在x轴上,且四边形
为矩形,是否存在点A,使得矩形
周长最大?若存在,求点A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/0c453894bbede5be3f254614050b79c5.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/afa482d7bcaa385bfc3548b42a4bfb60.png)
![](https://img.xkw.com/dksih/QBM/editorImg/2023/3/18/e925c889-f7a1-4d2f-be6c-1de3db720f2f.png?resizew=178)
(1)求该抛物线的解析式;
(2)点A、B在x轴上方的抛物线上,点A在点B左侧,点C、D在x轴上,且四边形
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/411b38a18046fea8e9fab1f9f9b80a5f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/411b38a18046fea8e9fab1f9f9b80a5f.png)
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【推荐2】如图,在平面直角坐标系中,一次函数
的图象与x轴交于点B,与y轴交于点C,抛物线
的图象经过B、C两点,且与x轴的负半轴交于点A.
![](https://img.xkw.com/dksih/QBM/editorImg/2022/11/30/a345a724-b2b7-4548-bf22-927c042e5cec.png?resizew=172)
(1)求二次函数的表达式;
(2)若点D在直线BC下方的抛物线上,如图,连接
、
,设四边形
的面积为S,求S的最大值.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/1bf8b47c911e0bbe9efaf7a36d6e84f6.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b740229a24e2fe9bd2c85147778b2dbd.png)
![](https://img.xkw.com/dksih/QBM/editorImg/2022/11/30/a345a724-b2b7-4548-bf22-927c042e5cec.png?resizew=172)
(1)求二次函数的表达式;
(2)若点D在直线BC下方的抛物线上,如图,连接
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/8cdd9f345915ae742ed3dcd3f9678264.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/93c3f982d999937891eec4cb22d62e5f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/aff247954b91c76db5c816977158a971.png)
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【推荐1】如图,矩形
中,
,
.G为
边上的一个动点,沿
翻折
,点A落在点F处.
,且点G与点D重合时,
交
于点E.
①求
的长;
②若点M在射线
上,且
,求
的值.
(2)连接
,在
边上存在两个不同位置的点G,使得
,则t的取值范围是 .
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/411b38a18046fea8e9fab1f9f9b80a5f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/3d2c15801fee2405573677484f5dcfa4.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ae9b1f0650c142ab3fcfcf45120352e7.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/03902478df1a55bc99703210bccab910.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/06e322e0c87479bba874db9ae9ba36b5.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/1bc727c642cbc2181476b7dd8eca471e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/04ee826937d2add7a93aaa1422f8b736.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d004d2d115b477ade6af7ddb93db0df8.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0dc5c9827dfd0be5a9c85962d6ccbfb1.png)
①求
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/85c4bdfb0db1e31e8459df1d15f9ab55.png)
②若点M在射线
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7dea2ae9d515f9ab351ad72306b776ee.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c5c5912cb9d301e646fe8d7322e1173b.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/aebd49dfc62d599df3fec01a492a0789.png)
(2)连接
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4cae70b8a9d2d2e96dea62c00ced04b9.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/03902478df1a55bc99703210bccab910.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/431a8066169d27a032e8025df02acdbf.png)
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【推荐2】综合与实践
问题情境
在综合实践课上,老师组织兴趣小组开展数学活动,探究正方形的旋转问题.在正方形
和正方形
中,点G,A,B在一条直线上,连接
,
(如图1).
操作发现
(1)图1中线段
和
的数量关系是______,位置关系是______.
(2)在图1的基础上,将正方形
绕着点A沿顺时针方向旋转,如图2所示,(1)中的结论是否成立?请仅就图2的情况说明理由.
类比探究
(3)如图3,若将图2中的正方形
和正方形
中都变为矩形,且
,
,请仅就图3的情况探究
与
之间的数量关系.
拓展探索
(4)在(3)的条件下,若
,
,矩形
在顺时针旋转过程中,当点D,E,F在同一直线时,请直接写出
的值.
问题情境
在综合实践课上,老师组织兴趣小组开展数学活动,探究正方形的旋转问题.在正方形
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/411b38a18046fea8e9fab1f9f9b80a5f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a8d0e8404f347a0eb4c76f4d25d9bdac.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/1e72b2e1ff83e95df048745322982451.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/85c4bdfb0db1e31e8459df1d15f9ab55.png)
![](https://img.xkw.com/dksih/QBM/editorImg/2023/7/23/2a741298-54b8-413d-8ec3-fba972bf5d4c.png?resizew=128)
![](https://img.xkw.com/dksih/QBM/editorImg/2023/7/23/d1eb7376-9dd4-41fc-9574-1c80201dad99.png?resizew=117)
![](https://img.xkw.com/dksih/QBM/editorImg/2023/7/23/92bb05de-ed02-49cf-9f69-bc3cb250cb86.png?resizew=121)
![](https://img.xkw.com/dksih/QBM/editorImg/2023/7/23/449a4563-2c6b-4100-b173-2aef0dbc69ff.png?resizew=89)
操作发现
(1)图1中线段
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/1e72b2e1ff83e95df048745322982451.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/85c4bdfb0db1e31e8459df1d15f9ab55.png)
(2)在图1的基础上,将正方形
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a8d0e8404f347a0eb4c76f4d25d9bdac.png)
类比探究
(3)如图3,若将图2中的正方形
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/411b38a18046fea8e9fab1f9f9b80a5f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a8d0e8404f347a0eb4c76f4d25d9bdac.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/cc1d36437d9e50f560536853ecd636d4.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a873a58367976340775a3c0bdd702370.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/85c4bdfb0db1e31e8459df1d15f9ab55.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/1e72b2e1ff83e95df048745322982451.png)
拓展探索
(4)在(3)的条件下,若
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/267ace52b64e1e7dfc5211e033255b7d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/30b0393ce62b24aa5f9b740d4cc6743b.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a8d0e8404f347a0eb4c76f4d25d9bdac.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/85c4bdfb0db1e31e8459df1d15f9ab55.png)
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【推荐3】我们定义:有一组邻角相等的凸四边形叫做“等邻角四边形”
(1)概念理解:
请你根据上述定义举一个等邻角四边形的例子;
(2)问题探究;
如图1,在等邻角四边形ABCD中,∠DAB=∠ABC,AD,BC的中垂线恰好交于AB边上一点P,连结AC,BD,试探究AC与BD的数量关系,并说明理由;
(3)应用拓展;
如图2,在Rt△ABC与Rt△ABD中,∠C=∠D=90°,BC=BD=3,AB=5,将Rt△ABD绕着点A顺时针旋转角α(0°<∠α<∠BAC)得到Rt△AB′D′(如图3),当凸四边形AD′BC为等邻角四边形时,求出它的面积.
(1)概念理解:
请你根据上述定义举一个等邻角四边形的例子;
(2)问题探究;
如图1,在等邻角四边形ABCD中,∠DAB=∠ABC,AD,BC的中垂线恰好交于AB边上一点P,连结AC,BD,试探究AC与BD的数量关系,并说明理由;
(3)应用拓展;
如图2,在Rt△ABC与Rt△ABD中,∠C=∠D=90°,BC=BD=3,AB=5,将Rt△ABD绕着点A顺时针旋转角α(0°<∠α<∠BAC)得到Rt△AB′D′(如图3),当凸四边形AD′BC为等邻角四边形时,求出它的面积.
![](https://img.xkw.com/dksih/QBM/2016/7/18/1574220601540608/1574220607832064/STEM/7e2ce1f980f94870a257b42d4c6d8a56.png?resizew=486)
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