已知:如图,抛物线
交
正半轴交于点
,交
轴于点
,点
在抛物线上,直线
:
过点
,点
是直线
上的一个动点,
的外心是
.
![](https://img.xkw.com/dksih/QBM/2020/7/2/2497267758292992/2497418046791680/STEM/284754b4-7efc-4569-b67d-7e68b83ba73e.png?resizew=221)
![](https://img.xkw.com/dksih/QBM/2020/7/2/2497267758292992/2497418046791680/STEM/e7f95abd-c3c3-4aca-8b2a-20745c9ef094.png?resizew=246)
(1)求
,
的值.
(2)当点
移动到点
时,求
的面积.
(3)①是否存在点
,使得点
落在
的边上,若存在,求出点
的坐标,若不存在,请说明理由.
②过点
作直线
轴交直线
于点
,当点
从点
移动到点
时,圆心
移动的路线长为_____.(直接写出答案)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0116aca690b431a7b75627d8464e2260.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/d053b14c8588eee2acbbe44fc37a6886.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7f9e8449aad35c5d840a3395ea86df6d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/745c82cc6418b182b01a5782e310c149.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0f85fca60a11e1af2bf50138d0e3fe62.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7e1091fb901674a0b7c73a104e9657d9.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7f9e8449aad35c5d840a3395ea86df6d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2a30f3a8b673cc28bd90c50cf1a35281.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0f85fca60a11e1af2bf50138d0e3fe62.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/dcb49df05f2e31d005735c3f14a21d30.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/dad2a36927223bd70f426ba06aea4b45.png)
![](https://img.xkw.com/dksih/QBM/2020/7/2/2497267758292992/2497418046791680/STEM/284754b4-7efc-4569-b67d-7e68b83ba73e.png?resizew=221)
![](https://img.xkw.com/dksih/QBM/2020/7/2/2497267758292992/2497418046791680/STEM/e7f95abd-c3c3-4aca-8b2a-20745c9ef094.png?resizew=246)
(1)求
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/294f5ba74cdf695fc9a8a8e52f421328.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b6a24198bd04c29321ae5dc5a28fe421.png)
(2)当点
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2a30f3a8b673cc28bd90c50cf1a35281.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7f9e8449aad35c5d840a3395ea86df6d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/dcb49df05f2e31d005735c3f14a21d30.png)
(3)①是否存在点
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2a30f3a8b673cc28bd90c50cf1a35281.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/dad2a36927223bd70f426ba06aea4b45.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/dcb49df05f2e31d005735c3f14a21d30.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2a30f3a8b673cc28bd90c50cf1a35281.png)
②过点
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5963abe8f421bd99a2aaa94831a951e9.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a5d3a0273d1f3046dfad2086d0df56c0.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0f85fca60a11e1af2bf50138d0e3fe62.png)
![](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/7f9e8449aad35c5d840a3395ea86df6d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/dad2a36927223bd70f426ba06aea4b45.png)
更新时间:2020-07-02 21:12:56
|
相似题推荐
解答题-问答题
|
困难
(0.15)
名校
【推荐1】如图①,在平面直角坐标系中,直线
:
与x轴交于点A,与y轴交于点B,直线
:
与x轴交于点C,与y轴交于点D,
与
交于点E.点F是点A右侧x轴上一动点,过点F作
轴,交
于点M,交
于点N,设点F得横坐标为a.
![](https://img.xkw.com/dksih/QBM/2022/11/10/3106685444005888/3131432215969792/STEM/91d347adf065480baf00422476464faf.png?resizew=541)
(1)求点E的坐标;
(2)当
时,求a的值;
(3)如图②,点P在线段MN上,点Q在线段
上,
,点G在线段
上,连接
、
,且
.
①直接写出点G的坐标(用含a的代数式表示)
②若点E关于x轴的对称点为点K,连接
、
,当
,且
时,直接写出点M的坐标.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2e9b0f5f44abbc6544a2f672b025b013.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0e8f77e3876694978a22975eff397375.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/3f6f17bc385bafb37e8f964e5eb99cd0.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c31c4f39399ec245a67db2933ed639f2.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2e9b0f5f44abbc6544a2f672b025b013.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/3f6f17bc385bafb37e8f964e5eb99cd0.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/61ca502b49d455f57cf7deb552f011ef.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2e9b0f5f44abbc6544a2f672b025b013.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/3f6f17bc385bafb37e8f964e5eb99cd0.png)
![](https://img.xkw.com/dksih/QBM/2022/11/10/3106685444005888/3131432215969792/STEM/91d347adf065480baf00422476464faf.png?resizew=541)
(1)求点E的坐标;
(2)当
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/88b814f37c340a9299215481ae6b5e7b.png)
(3)如图②,点P在线段MN上,点Q在线段
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/6aa2b5e09f8ec785c59900a529390a02.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/25ea0299e74d5723ff678f266fa64fa8.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/167d31eb8432b5c0364316e5048c23dd.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7a5f1641947153c80b987320885a2b57.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4505508b3e36db64a207dcdaf8eb22dc.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/995bfb0ad1dda1572455863c830cc5dc.png)
①直接写出点G的坐标(用含a的代数式表示)
②若点E关于x轴的对称点为点K,连接
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d61be62a066c7ad65f9fa64ba1de1ba4.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/8e9e953a4a5f98c96bbe67cbaadf76d9.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/26c3137858381d74d7322c512f119044.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/6e6df737c1b40811e30907b5b531bd60.png)
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名校
【推荐2】已知:平面直角坐标系中,
,
,
,在
正半轴有一动点
(点
在
的右侧),连接
,
,
,在
轴负半轴取点
,使
,连接
,
,设
.
![](https://img.xkw.com/dksih/QBM/2023/11/10/3365151038152704/3367127583965184/STEM/dcb06022fbc14bff86ec280a74c9479a.png?resizew=526)
(1)如图1,当
时,求线段
的长度.
(2)如图2,连接
,当
时,求
的值.
(3)如图3,延长
交于点
,在第四象限有一点
,连接
,当
时,求直线PF的解析式.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0693b34e767ea963d4a75863c072d217.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b2c77a42750684cb6157c2c7fb9422a3.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/84a56e5ddc6dc057aa4076130cc6ce19.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/dad2a36927223bd70f426ba06aea4b45.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c5db41a1f31d6baee7c69990811edb9f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f52a58fbaf4fea03567e88a9f0f6e37e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/60ef95894ceebaf236170e8832dcf7e3.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/20a541b81584a032f571159ea152c85a.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d053b14c8588eee2acbbe44fc37a6886.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2a30f3a8b673cc28bd90c50cf1a35281.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ef227e3c17e425d6809b50489f83f50b.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/85c4bdfb0db1e31e8459df1d15f9ab55.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/fc5adb5eb60ae4435a12d93854066298.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/cca572ab39e96dd95c6846aafe96b6dd.png)
![](https://img.xkw.com/dksih/QBM/2023/11/10/3365151038152704/3367127583965184/STEM/dcb06022fbc14bff86ec280a74c9479a.png?resizew=526)
(1)如图1,当
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5a2a51944c720568f35d443589dfc1aa.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/fc5adb5eb60ae4435a12d93854066298.png)
(2)如图2,连接
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/85c4bdfb0db1e31e8459df1d15f9ab55.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2ffb3896ab8df964efaa98f4bd37febf.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/36a1b09c653185842513e24ebba60bb3.png)
(3)如图3,延长
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/9dbc9e160ef0d4d196aa6c09b9e9cb8c.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/8455657dde27aabe6adb7b188e031c11.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a0ed1ec316bc54c37c4286c208f55667.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4fb26d84907c923278ac4626a9d58947.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/fcbfa9283dc0bf08b97d841c8de60057.png)
您最近一年使用:0次
解答题-问答题
|
困难
(0.15)
真题
解题方法
【推荐1】如图,已知抛物线
(b是实数且b>2)与x轴的正半轴分别交于点A、B(点A位于点B的左侧),与y轴的正半轴交于点C.
(1)点B的坐标为 ,点C的坐标为 (用含b的代数式表示);
(2)请你探索在第一象限内是否存在点P,使得四边形PCOB的面积等于2b,且△PBC是以点P为直角顶点的等腰直角三角形?如果存在,求出点P的坐标;如果不存在,请说明理由;
(3)请你进一步探索在第一象限内是否存在点Q,使得△QCO、△QOA和△QAB中的任意两个三角形均相似(全等可看作相似的特殊情况)?如果存在,求出点Q的坐标;如果不存在,请说明理由.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/efeb8874c4e29fcde0123b6a82302272.png)
(1)点B的坐标为 ,点C的坐标为 (用含b的代数式表示);
(2)请你探索在第一象限内是否存在点P,使得四边形PCOB的面积等于2b,且△PBC是以点P为直角顶点的等腰直角三角形?如果存在,求出点P的坐标;如果不存在,请说明理由;
(3)请你进一步探索在第一象限内是否存在点Q,使得△QCO、△QOA和△QAB中的任意两个三角形均相似(全等可看作相似的特殊情况)?如果存在,求出点Q的坐标;如果不存在,请说明理由.
![](https://img.xkw.com/dksih/QBM/2012/7/3/1573423749783552/1573423795150848/STEM/cd4d69c6625a475a9beeb5a7dfbe202a.png?resizew=256)
您最近一年使用:0次
解答题-问答题
|
困难
(0.15)
【推荐2】在平面直角坐标系中,抛物线
交
轴于
,
两点,交
轴于点
.
(2)如图1,点
为第四象限抛物线上一点,过点
作
轴平行线交直线
于点
,交
轴于点
.若
,求
的长;
(3)将抛物线
平移到顶点为坐标原点的抛物线
,直线
与抛物线
交于
,
两点(点
始终在点
左侧),分别过点
,
与抛物线
均只存在唯一公共点的直线
,
与
轴分别交于
,
.若
,求直线
,
的交点
坐标.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ba38daebce7db0bc0716855b80bb6470.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/fec0bc3a43265b63b6964476ca327fab.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d053b14c8588eee2acbbe44fc37a6886.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/51b5288ad85ce1ff24d0b4053a4869ef.png)
(2)如图1,点
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/8455657dde27aabe6adb7b188e031c11.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/60ef95894ceebaf236170e8832dcf7e3.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2a30f3a8b673cc28bd90c50cf1a35281.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/81dea63b8ce3e51adf66cf7b9982a248.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a0ed1ec316bc54c37c4286c208f55667.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c056a26c993ab806c603f063f78da923.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e6e490f703eb6c9bb1278c78ebc2d661.png)
(3)将抛物线
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0c88d9142df6ba8e43c1a93bd04a1362.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/172722d11ea7e01411fa06dbb82f46ee.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/863ca4a43fadb192c8aa22865ff8bdf3.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/172722d11ea7e01411fa06dbb82f46ee.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/ac047e91852b91af639feec23a9598b2.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/54a5d7d3b6b63fe5c24c3907b7a8eaa3.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/172722d11ea7e01411fa06dbb82f46ee.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/294f5ba74cdf695fc9a8a8e52f421328.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b6a24198bd04c29321ae5dc5a28fe421.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/73465a1f9aa03481295bf6bd3c6903ac.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/04d5161a60846b450881b5104b177a7d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/294f5ba74cdf695fc9a8a8e52f421328.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b6a24198bd04c29321ae5dc5a28fe421.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/dad2a36927223bd70f426ba06aea4b45.png)
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解答题-问答题
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困难
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解题方法
【推荐1】如图,在
中,
,
,
,点P从点A出发以每秒2个单位的速度沿AB向终点B运动,当点P不与点A,B重合时,作
,边PD交折线
于点D,点A关于直线PD的对称点为E,连结ED,EP得到
.设点P的运动时间为t(秒).
![](https://img.xkw.com/dksih/QBM/2022/4/24/2965157279883264/2967092010270720/STEM/235bdb0d-db3c-4f44-8729-fc0a6f3a1d9c.png?resizew=252)
(1)直接写出线段PD的长(用含t的代数式表示);
(2)当点E落在边BC上时,求t的值;
(3)设
与
重合部分图形的面积为S,求S与t的函数关系式;
(4)设M为AB的中点,N为ED的中点,连结MN.当MN与
的边垂直时,直接写出t的值.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/eddf629bfb2d7b9daea6f2c1553360af.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/54275b7e571660d0a9e0370fbfe5050b.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ed10df4140819d5451773a45de66201b.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c5b8b98b2f83279a49e94d9f48c5e6f2.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/cdae87198b32074628c53276ebb22d5d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2a52ef2a5f53a6d6aed3617b64b3d58b.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7cff7399ecc698e2fb415147c96d0d03.png)
![](https://img.xkw.com/dksih/QBM/2022/4/24/2965157279883264/2967092010270720/STEM/235bdb0d-db3c-4f44-8729-fc0a6f3a1d9c.png?resizew=252)
(1)直接写出线段PD的长(用含t的代数式表示);
(2)当点E落在边BC上时,求t的值;
(3)设
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7cff7399ecc698e2fb415147c96d0d03.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/15c0dbe3c080c4c4636c64803e5c1f76.png)
(4)设M为AB的中点,N为ED的中点,连结MN.当MN与
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/15c0dbe3c080c4c4636c64803e5c1f76.png)
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名校
【推荐2】已知
为等边三角形,
是平面内的一个动点.
(1)如图1,点
在
内部,连接
并延长交
于点
,连接
并延长交
于点
;若
,求
的度数.
(2)如图2,点
在
外部,连接
,点D为线段
中垂线上一点,连接
,
为
中点,连接
;若
,求证
;
(3)如图3,点
在
外部,
,将
沿着
翻折,得到
,连接
,
为线段
上一点,且
,连接
;若
,当线段
的长取最小值时,直接写出
的面积.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b3c65edad25ddd666cdce0d7e5afefc9.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/dad2a36927223bd70f426ba06aea4b45.png)
![](https://img.xkw.com/dksih/QBM/editorImg/2023/11/1/e7f278d0-a712-4d49-934b-1b5987eb560b.png?resizew=518)
(1)如图1,点
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/dad2a36927223bd70f426ba06aea4b45.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b3c65edad25ddd666cdce0d7e5afefc9.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/80672dda9430cb42b3136bcb1b67bbad.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/764509115979e9958101808383672ec0.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/8455657dde27aabe6adb7b188e031c11.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/13af018556f0b484ed38519f2edc791c.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e1a9c6a736e6eac98a676fa3232db5a5.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2a30f3a8b673cc28bd90c50cf1a35281.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/bb7852eb99a283b8f0bd5a4dff3c2def.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e20592db1026476ba6b2ab0ee9c3b08b.png)
(2)如图2,点
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/dad2a36927223bd70f426ba06aea4b45.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b3c65edad25ddd666cdce0d7e5afefc9.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/fcfaca9396f85c0137b534903321fcbe.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/fcfaca9396f85c0137b534903321fcbe.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/6526db2de60a21d065426b8df41b3ad7.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2a30f3a8b673cc28bd90c50cf1a35281.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/13af018556f0b484ed38519f2edc791c.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7b8cf040a2dd16ec2354da56e8e0b15c.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/441a916877aba85e3a4fd4042cf4ef4f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/163f7825fd683b7815058f274a6348b8.png)
(3)如图3,点
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/dad2a36927223bd70f426ba06aea4b45.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b3c65edad25ddd666cdce0d7e5afefc9.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/334798ad46f953443e5e703c415900ed.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b3c65edad25ddd666cdce0d7e5afefc9.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e1a9c6a736e6eac98a676fa3232db5a5.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c5200e6898e7662502286191553dacfe.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/96c10cd9fe2cec68681f6246f23420f2.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ac047e91852b91af639feec23a9598b2.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/80672dda9430cb42b3136bcb1b67bbad.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/eb001c239af84fb2f31fb69dd05bcd52.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/83f00d88b9f850dea09aa8c682b9d610.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/377f5c10cf527c87ab06bff61384f7e3.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/96c10cd9fe2cec68681f6246f23420f2.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/6ddeb96b18534a0894b0884e0e05461b.png)
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解答题-作图题
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困难
(0.15)
【推荐3】在平面直角坐标系
中,对于线段
和点P作出如下定义:若点M,N分别是线段
,
的中点,连接
,我们称线段
的中点Q是点P关于线段
的“关联点”.
(1)已知点
,点P关于线段
的“关联点”是点Q.
①若点P的坐标是
,则点Q的坐标是______;
②若点E的坐标是
,点F的坐标是
.点P是线段
上任意一点,求线段
长的取值范围;
(2)点A是直线
上的动点.在矩形
中,边
轴,
.点P是矩形
边上的动点,点P关于其所在边的对边的“关联点”是点Q.过点A作x轴的垂线,垂足为点G.设点G的坐标是
.当点A沿着直线
运动到点
时,点G沿着x轴运动到点
,点Q覆盖的区域的面积S满足
,直接写出m的取值范围.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7ee31829d0d4d5f779a957d7df8058ab.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/411461db15ee8086332c531e086c40c7.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/893ff0f9b64c66312c37cb7ce90c351d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/627094931c642543bd218e2e8f98a343.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a4a949c00526fddf435423272cf10f25.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a4a949c00526fddf435423272cf10f25.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/411461db15ee8086332c531e086c40c7.png)
![](https://img.xkw.com/dksih/QBM/editorImg/2023/7/14/b9a48873-484a-4fde-8b4b-7e113f61c576.png?resizew=428)
(1)已知点
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d9058a05d7c490f9ae9110a57df3f7fe.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/aaf3369e0ea90e8d5cf4b6b3c45c0fd8.png)
①若点P的坐标是
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/57f436117499e8ba9cb034e2704fc0dd.png)
②若点E的坐标是
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/fd671485510db87f19e9b92671a4f8af.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b46d050ee50fc01ec21b3a6943f0ccfb.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/49b50357a6545cae8348e3059312f520.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7a5f1641947153c80b987320885a2b57.png)
(2)点A是直线
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/06553b7e77205d053c1981e9c050d579.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/411b38a18046fea8e9fab1f9f9b80a5f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/dc195a9f7ac138e5a1ad87d5fa201c49.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b776fa9616f1b062d226d8b6c57ac536.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/411b38a18046fea8e9fab1f9f9b80a5f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/dd610632399a73438c2bcf20abded2ce.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0f85fca60a11e1af2bf50138d0e3fe62.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e7c314398e26ffc7164b82946eeb4273.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f0c4dae1d54836f709f28605e9c4e26c.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7349da1bc9449c4660f2177bbd43ad2b.png)
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名校
【推荐1】如图1,抛物线y=tx2﹣16tx+48t(t为常数,t<0)与x轴交于A,B两点(点A在点B左侧),与y轴交于点C.
![](https://img.xkw.com/dksih/QBM/2021/12/30/2883782880083968/2884889992429568/STEM/0de58f71-f5ea-40ca-a160-e975435711bf.png?resizew=389)
(1)点A的坐标是 ,点B的坐标是 ;
(2)如图2,点D是抛物线上的一点,且位于第一象限,连接BD,延长BD交y轴于点E,若∠BCE=∠BEC.
①求点D的坐标(用含t的式子表示);
②若以点D为圆心,半径为8作⊙D,试判断⊙D与y轴的位置关系;
(3)若该抛物线经过点(h,
),且对于任意实数x,不等式tx2﹣16tx+48t≤
恒成立,求△BOC外心F与内心I之间的距离.
![](https://img.xkw.com/dksih/QBM/2021/12/30/2883782880083968/2884889992429568/STEM/0de58f71-f5ea-40ca-a160-e975435711bf.png?resizew=389)
(1)点A的坐标是 ,点B的坐标是 ;
(2)如图2,点D是抛物线上的一点,且位于第一象限,连接BD,延长BD交y轴于点E,若∠BCE=∠BEC.
①求点D的坐标(用含t的式子表示);
②若以点D为圆心,半径为8作⊙D,试判断⊙D与y轴的位置关系;
(3)若该抛物线经过点(h,
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/292b791c7cf21c172e6e7f97f04be176.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/292b791c7cf21c172e6e7f97f04be176.png)
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解答题-问答题
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(0.15)
【推荐2】如图,在平面直角坐标系中,二次函数图像与x轴交于
、
,与y轴交于点
.
![](https://img.xkw.com/dksih/QBM/editorImg/2024/3/23/374a4b52-0380-4366-a44a-4a0970fc732f.jpg?resizew=217)
(1)求二次函数的解析式;
(2)若平行于x轴的直线与抛物线交于M、N两点,与抛物线的对称轴交于H点,若点H到x轴的距离是线段MN的
,求线段MN的长;
(3)抛物线的顶点为D,过定点Q的直线
与二次函数交于E、F,
外接圆的圆心在一条抛物线上运动,求该抛物线的解析式.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/45d57173ef4cd72eb270686875dfd623.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f36488f7dff759ace2a27e56c3857056.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/850e01debd266a398b597a1876dbb3ea.png)
![](https://img.xkw.com/dksih/QBM/editorImg/2024/3/23/374a4b52-0380-4366-a44a-4a0970fc732f.jpg?resizew=217)
(1)求二次函数的解析式;
(2)若平行于x轴的直线与抛物线交于M、N两点,与抛物线的对称轴交于H点,若点H到x轴的距离是线段MN的
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f89eef3148f2d4d09379767b4af69132.png)
(3)抛物线的顶点为D,过定点Q的直线
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/6e1d36e68a02f583aeff07ec822d65a0.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/72cb97395ebc5ee1b212afb7a97b985c.png)
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解答题-问答题
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(0.15)
解题方法
【推荐3】如图,已知二次函数
(b,c为常数)的图象经过点A(3,1),点C(0,4),顶点为点M,过点A作AB∥x轴,交y轴于点D,交该二次函数图象于点B,连结BC.
(1)求该二次函数的解析式及点M的坐标;
(2)若将该二次函数图象向下平移
个单位,使平移后得到的二次函数图象的顶点与△ABC的外心重合,求
的取值;
(3)点P是坐标平面内的一点,使得△ACB与△MCP相似,且CM的对应边为AC,请写出所有点P的坐标(直接写出结果,不必写解答过程).
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/58d88bbd34102b55fa928e8ff83f0d52.png)
(1)求该二次函数的解析式及点M的坐标;
(2)若将该二次函数图象向下平移
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a1f07948e9258b482a2164ac871f90f9.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/294f5ba74cdf695fc9a8a8e52f421328.png)
(3)点P是坐标平面内的一点,使得△ACB与△MCP相似,且CM的对应边为AC,请写出所有点P的坐标(直接写出结果,不必写解答过程).
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