1 . 如图,在
与
中,
,
,射线
与直线
交于点P.
;
(2)若
,求
的值;
(3)若
绕点B逆时针旋转一周,直接写出线段
的最大值与最小值.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/15c0dbe3c080c4c4636c64803e5c1f76.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b96715995549e5e48494101570bb3bb8.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2cb91f6407ceed24eb23280c79c8c0be.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/af633abfe3cb03f1836db6c570a5bcc6.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/68a83fdd2ba72a2dba0b6b10bb3e06b9.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/9d78abbad68bbbf12af10cd40ef4c353.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/8eb38506b42f6e69f7c6539512030489.png)
(2)若
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/03733d1465d041a6d6da32bf91a7cff8.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5adc6d8c8b7a0ba47a64145361435276.png)
(3)若
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b96715995549e5e48494101570bb3bb8.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/20a541b81584a032f571159ea152c85a.png)
您最近一年使用:0次
2024-01-26更新
|
130次组卷
|
5卷引用:2020年四川省成都市高新区九年级一诊(上学期期末)数学试题
解题方法
2 . 如图,函数
的图象经过点
,
两点,
,
分别是方程
的两个实数根,且
.
(1)求
,
的值以及函数的解析式;当
时,求函数
的最大值和最小值;
(2)设抛物线
与
轴的另一个交点为
,抛物线的顶点为
,连接
,
,
,
求证:
.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/58d88bbd34102b55fa928e8ff83f0d52.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a1d8e820de039970450591eea09c1d0e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/fd06d4b3e9eb84cb458491e8cf75e517.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/8034dddd265a186e29172623e3b9eadf.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/cb7961cbe98aac6a5fdee94582c341b4.png)
(1)求
![](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/c0cef240d477c67ab70bef415cb36551.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d053b14c8588eee2acbbe44fc37a6886.png)
(2)设抛物线
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/58d88bbd34102b55fa928e8ff83f0d52.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/81dea63b8ce3e51adf66cf7b9982a248.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/f52a58fbaf4fea03567e88a9f0f6e37e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0dc5c9827dfd0be5a9c85962d6ccbfb1.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d40b319212a7e7528b053e1c7097e966.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/9d78abbad68bbbf12af10cd40ef4c353.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/080fa30a66221d27060c37c17a56b445.png)
![](https://img.xkw.com/dksih/QBM/editorImg/2022/10/26/7d124512-75d5-446f-8680-fa93d3258f3b.png?resizew=238)
您最近一年使用:0次
3 . 如图,函数
的图象经过点
,
两点,
,
分别是方程
的两个实数根,且
.
![](https://img.xkw.com/dksih/QBM/2021/2/1/2648701636911104/2650607489892352/STEM/29cea7af14ee46079690cb522b4debde.png?resizew=164)
(1)求
,
的值以及函数的解析式;
(2)对于(1)中所求的函数
,当
时,求函数
的最大值和最小值;
(3)设抛物线
与
轴的另一个交点为
,抛物线的顶点为
,连接
,
,
,求证:
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/58d88bbd34102b55fa928e8ff83f0d52.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/3d7a6fd6d651ae341154c2e40928d628.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/db9100f0df5302cd5596b7a653bc1943.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/8034dddd265a186e29172623e3b9eadf.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/cb7961cbe98aac6a5fdee94582c341b4.png)
![](https://img.xkw.com/dksih/QBM/2021/2/1/2648701636911104/2650607489892352/STEM/29cea7af14ee46079690cb522b4debde.png?resizew=164)
(1)求
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/294f5ba74cdf695fc9a8a8e52f421328.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b6a24198bd04c29321ae5dc5a28fe421.png)
(2)对于(1)中所求的函数
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/58d88bbd34102b55fa928e8ff83f0d52.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/836d745b71ec18b1135e8bbf6990bffa.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d053b14c8588eee2acbbe44fc37a6886.png)
(3)设抛物线
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/58d88bbd34102b55fa928e8ff83f0d52.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/81dea63b8ce3e51adf66cf7b9982a248.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/f52a58fbaf4fea03567e88a9f0f6e37e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0dc5c9827dfd0be5a9c85962d6ccbfb1.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d40b319212a7e7528b053e1c7097e966.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/080fa30a66221d27060c37c17a56b445.png)
您最近一年使用:0次
18-19九年级下·浙江杭州·期末
4 . 如图,在同一平面内,将两个全等的等腰直角三角形
和
摆放在一起,A为公共顶点,
,若
固定不动,
绕点A旋转,边
、
与边
的交点分别为D、E(点D不与点B重合,点E不与点C重合).
![](https://img.xkw.com/dksih/QBM/2021/1/27/2645199156953088/2645870218133504/STEM/1f4370de11464436b7513037287545d9.png?resizew=146)
(1)请在图中找出两对相似而不全等的三角形,并选取其中一对进行证明.
(2)设
,
①若
,求n;
②直接写出n的取值范围.
(3)你觉得
的面积有最大值吗?有最小值吗?请说明理由.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/15c0dbe3c080c4c4636c64803e5c1f76.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7572ecc467c061ef71cf4486ec63ec3e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/19ef46b95bdf255744f1332cbcce3381.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/15c0dbe3c080c4c4636c64803e5c1f76.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7572ecc467c061ef71cf4486ec63ec3e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/6aa2b5e09f8ec785c59900a529390a02.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/77a7e4a6765ce78b05ee97764771e01f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0dc5c9827dfd0be5a9c85962d6ccbfb1.png)
![](https://img.xkw.com/dksih/QBM/2021/1/27/2645199156953088/2645870218133504/STEM/1f4370de11464436b7513037287545d9.png?resizew=146)
(1)请在图中找出两对相似而不全等的三角形,并选取其中一对进行证明.
(2)设
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5afc96a62c33432fa2ef610a335b2f00.png)
①若
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b1d318d706ca4ec954246a292293b91a.png)
②直接写出n的取值范围.
(3)你觉得
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a25c28359f8d8da9eaf4672a6cf8ae4f.png)
您最近一年使用:0次
5 . 已知,如图1,抛物线
过
三点,顶点为点
,连接
,点
为抛物线对称轴上一点,连接
,直线
过点
两点.
(1)求抛物线
及直线
的函数解析式;
(2)求
的最小值;
(3)求证:
∽
;
(4)如图2,若点
是在抛物线
上且位于第一象限内的一动点,请直接写出
面积的最大值及此时点
的坐标.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c18aada6913c2875b88a6c7b41804491.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/6d48f14bc638e1eec430ba505c8f9ada.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/8455657dde27aabe6adb7b188e031c11.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/eb333d1385513dfdf3c528ae72954aad.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/dad2a36927223bd70f426ba06aea4b45.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e61de6d673ecbbbd9458991558e7dc90.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ee5e62e8723be1c4c2471462132f2d8a.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ab609a6574633ebabcff3e73fa862081.png)
(1)求抛物线
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0f85fca60a11e1af2bf50138d0e3fe62.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/354f8e9d6cca157b95877d6540d16fb3.png)
(2)求
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/1441093334b71f88954eed46804c316c.png)
(3)求证:
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d3304bc1372275307dce0bf4e98b8f3e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/683e959092b9fdd4449a464f4f49a330.png)
(4)如图2,若点
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ac047e91852b91af639feec23a9598b2.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0f85fca60a11e1af2bf50138d0e3fe62.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c07f8a6cee7d61f28406578fdc46ff0e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ac047e91852b91af639feec23a9598b2.png)
![](https://img.xkw.com/dksih/QBM/2020/4/14/2441496862416896/2442192422060032/STEM/5ba0bc09-6a17-41fb-b1e4-d32d9c3d68fa.png)
您最近一年使用:0次
解答题-问答题
|
较难(0.4)
|
6 . 如图,⊙O的半径为1,等腰直角三角形ABC的顶点B固定且坐标为(
,0),顶点A在⊙O上运动,始终保持
CAB=90°,AC=AB
(1)当点A在x轴上时,求点C的坐标;
(2)当点A运动到x轴的负半轴上时,试判断直线BC与⊙O位置关系,并说明理由;
(3)设点A的横坐标为x,△ABC的面积为S,求S与x之间的函数关系式,并求出S的最大值与最小值;
(4)当直线AB与⊙O相切时,求AB所在直线对应的函数关系式.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/cf298f00799cbf34b4db26f5f63af92f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/665ffcdb7c57534dc184cc840471f2f5.png)
(1)当点A在x轴上时,求点C的坐标;
(2)当点A运动到x轴的负半轴上时,试判断直线BC与⊙O位置关系,并说明理由;
(3)设点A的横坐标为x,△ABC的面积为S,求S与x之间的函数关系式,并求出S的最大值与最小值;
(4)当直线AB与⊙O相切时,求AB所在直线对应的函数关系式.
![](https://img.xkw.com/dksih/QBM/2017/3/20/1647770483597312/1652861047259136/STEM/6175ee433a944519a6693d998f90d06a.png?resizew=182)
您最近一年使用:0次
真题
7 . 如图,在边长为4的正方形ABCD中,P是BC边上一动点(不含B、C两点),将△ABP沿直线AP翻折,点B落在点E处;在CD上有一点M,使得将△CMP沿直线MP翻折后,点C落在直线PE上的点F处,直线PE交CD于点N,连接MA,NA.则以下结论中正确的有 (写出所有正确结论的序号)
![](https://img.xkw.com/dksih/QBM/2016/8/5/1574227849568256/1574227855802368/STEM/8bcedec624ca4e92bb4b9d9428bcd8bd.png?resizew=165)
①△CMP∽△BPA;
②四边形AMCB的面积最大值为10;
③当P为BC中点时,AE为线段NP的中垂线;
④线段AM的最小值为
;
⑤当△ABP≌△ADN时,BP=
.
![](https://img.xkw.com/dksih/QBM/2016/8/5/1574227849568256/1574227855802368/STEM/8bcedec624ca4e92bb4b9d9428bcd8bd.png?resizew=165)
①△CMP∽△BPA;
②四边形AMCB的面积最大值为10;
③当P为BC中点时,AE为线段NP的中垂线;
④线段AM的最小值为
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/03e9d0e63d7ec8ddf95482bf0bc5b144.png)
⑤当△ABP≌△ADN时,BP=
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/3e915136525246b76dca58d7cdf3619a.png)
您最近一年使用:0次
2016-12-06更新
|
844次组卷
|
6卷引用:2016年初中毕业升学考试(四川宜宾卷)数学
2016年初中毕业升学考试(四川宜宾卷)数学(已下线)决胜2018中考压轴题全揭秘 专题15 相似形问题(已下线)专题12 压轴题——2018年中考数学冲刺专题卷湘教版九年级数学上册期末综合检测试卷【校级联考】湖北省十堰市部分学校2019届九年级3月月考数学试题2021年四川省宜宾市叙州区双龙镇初级中学校中考数学模拟试题(二)
真题
8 . 如图,在菱形
中,对角线
相交于点O,
,
.动点P从点A出发,沿
方向匀速运动,速度为
;同时,动点Q从点A出发,沿
方向匀速运动,速度为
.以
为邻边的平行四边形
的边
与
交于点E.设运动时间为
,解答下列问题:
上时,求t的值;
(2)连接
.设
的面积为
,求S与t的函数关系式和S的最大值;
(3)是否存在某一时刻t,使点B在
的平分线上?若存在,求出t的值;若不存在,请说明理由.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/411b38a18046fea8e9fab1f9f9b80a5f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/989c75a3fd02e4971cab421c88de92f1.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e1cd4a1c8087ef697d82b321a3331211.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/9cc9127508c14e2247397d024884ddf5.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f52a58fbaf4fea03567e88a9f0f6e37e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2b9174c3b1324cf81098e42e0480bcc8.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/03902478df1a55bc99703210bccab910.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ebc2d9b900111188aca83126dff97f32.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/940060c97feb69438eb2877721019f36.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/10387ddaa479686b10fd345ed21c7197.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/892909e49156f7dcc0650fcd65243877.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/60ef95894ceebaf236170e8832dcf7e3.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5a2f59934a41324b82fc37188282abbf.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d40b319212a7e7528b053e1c7097e966.png)
(2)连接
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/85c4bdfb0db1e31e8459df1d15f9ab55.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5ba8a7ce19548adba34a16080230360d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/cab9091bc1886a3fd3d17160b2d41ded.png)
(3)是否存在某一时刻t,使点B在
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a67e3685787de6e03cac347967a487da.png)
您最近一年使用:0次
2023-09-20更新
|
2038次组卷
|
4卷引用:2023年山东省青岛市中考数学真题
2023年山东省青岛市中考数学真题浙江省嘉兴市嘉善县嘉善四中实验学校2023-2024学年九年级下学期3月月考数学试题(已下线)突破06 函数与几何图形动态探究题(5类重点考向)-备战2024年中考数学真题题源解密(全国通用)(已下线)重难点04 二次函数综合(7大题型+满分技巧+限时分层检测)-2024年中考数学【热点·重点·难点】专练(上海专用)
名校
9 .
中,
,
于D,
于E,
交
于F
![](https://img.xkw.com/dksih/QBM/2023/5/25/3245254597943296/3248399721668608/STEM/42afbba44b4c49a69e71b92ccd01dd37.png?resizew=238)
(1)求证:
;
(2)求
(用含m的代数式表示);
(3)当
时,求
的最大值.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/15c0dbe3c080c4c4636c64803e5c1f76.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/51a9cc31fd87b8f8649fd8a0e006a282.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/8b5f215a42c4b7078d8d65923eb9980e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f913298f0fae9f55377a8deab9f099dd.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/03902478df1a55bc99703210bccab910.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4eedae8d316c76e3d0b451256de03fb9.png)
![](https://img.xkw.com/dksih/QBM/2023/5/25/3245254597943296/3248399721668608/STEM/42afbba44b4c49a69e71b92ccd01dd37.png?resizew=238)
(1)求证:
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0e718ca448393b0a6b87d04680460ae2.png)
(2)求
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b304eeff74b19c1e9e6f351bb473b388.png)
(3)当
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/37e25b9b8e906fa529f5786091bf2317.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/9f692d0437e200690eabcd84ebcfa8a9.png)
您最近一年使用:0次
2023-05-29更新
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384次组卷
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2卷引用:2023年江苏省无锡市省锡中实验学校中考三模数学试题
10 . 如图,已知边长为10的正方形ABCD,E是BC边上一动点(与B、C不重合),连接AE,将AE绕着E点沿顺时针方向旋转90°后与∠DCG的角平分线相交于点F,过F点作BC的垂线交BC的延长线于点G.
![](https://img.xkw.com/dksih/QBM/2022/3/10/2933350512001024/3036382865629184/STEM/fc96044bf3a04ca18120bb5538989af1.png?resizew=220)
(1)求证:△ABE∽△EGF;
(2)若EC=2,求证△ABE≌△EGF;
(3)当EC为何值时,△CEF的面积最大,并求出其最大值.
![](https://img.xkw.com/dksih/QBM/2022/3/10/2933350512001024/3036382865629184/STEM/fc96044bf3a04ca18120bb5538989af1.png?resizew=220)
(1)求证:△ABE∽△EGF;
(2)若EC=2,求证△ABE≌△EGF;
(3)当EC为何值时,△CEF的面积最大,并求出其最大值.
您最近一年使用:0次