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
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
.
![](https://img.xkw.com/dksih/QBM/editorImg/2023/3/11/aa1174b0-8f3d-480d-9b05-f170adf991ce.png?resizew=169)
(1)求
,
的值以及函数的解析式;
(2)设抛物线
与x轴的另一个交点为
,抛物线的顶点为
,连接
,
,
,
.求证:
;
(3)对于(1)中所求的函数
,当
时,求函数
的最大值和最小值.
![](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/b1dc691018f939156edb2ec1a91fca8d.png)
![](https://img.xkw.com/dksih/QBM/editorImg/2023/3/11/aa1174b0-8f3d-480d-9b05-f170adf991ce.png?resizew=169)
(1)求
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/294f5ba74cdf695fc9a8a8e52f421328.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b6a24198bd04c29321ae5dc5a28fe421.png)
(2)设抛物线
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/58d88bbd34102b55fa928e8ff83f0d52.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/b79dd200766db27fb90d6bd1992cf658.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/764509115979e9958101808383672ec0.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b3182db896bc2462331796e2a6108363.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e1ffb98f1e3c1317c0db403d3af04bdc.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/080fa30a66221d27060c37c17a56b445.png)
(3)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)
您最近一年使用:0次
2023-03-08更新
|
151次组卷
|
2卷引用:2023年四川省宜宾市柳嘉中考一模数学试题
真题
3 . 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)(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
4 . 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
名校
5 . 如图1,在平面直角坐标系中,抛物线y=ax2+bx+4与x轴交于点A(﹣2,0)、B(4,0),与y轴交于点C.
(1)求抛物线的函数解析式;
(2)点D是抛物线上一点,D点横坐标为3,连接AD,点P为AD上方抛物线上一点,连接PA,PD,请求出△PAD面积的最大值及此时点P的坐标;
(3)如图2,将原抛物线y=ax2+bx+4沿x轴负半轴方向平移2个单位长度,得到新抛物线y1=a1x2+b1x+c1(a1≠0),新抛物线与原抛物线交于点M.点N是原抛物线对称轴上一点,在平面直角坐标系内是否存在点Q,使得以点A、M、N、Q为顶点的四边形是矩形?若存在,请直接写出点Q的坐标;若不存在,请说明理由.
(1)求抛物线的函数解析式;
(2)点D是抛物线上一点,D点横坐标为3,连接AD,点P为AD上方抛物线上一点,连接PA,PD,请求出△PAD面积的最大值及此时点P的坐标;
(3)如图2,将原抛物线y=ax2+bx+4沿x轴负半轴方向平移2个单位长度,得到新抛物线y1=a1x2+b1x+c1(a1≠0),新抛物线与原抛物线交于点M.点N是原抛物线对称轴上一点,在平面直角坐标系内是否存在点Q,使得以点A、M、N、Q为顶点的四边形是矩形?若存在,请直接写出点Q的坐标;若不存在,请说明理由.
![](https://img.xkw.com/dksih/QBM/2021/4/18/2702479410708480/2703008856940544/STEM/ec6d7983-025a-4346-8e2f-22eada0edff5.png?resizew=551)
您最近一年使用:0次
6 . 如图1,在
中,
,
,
分别为边
,
上的点,连接
,过
作
交
边于点
(
不与点
重合),点
为射线
上一点,连接
,使
.
(1)连接
,求证:
;
(2)当
时,请探究
,
与
三者满足的数量关系,并证明;
(3)如图2,点
,
分别为
和
的中点,连接
.若
,
,
,请直接写出
的最小值.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/eddf629bfb2d7b9daea6f2c1553360af.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/45acdbac251ca6b76a166c1242e71df9.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/0dc5c9827dfd0be5a9c85962d6ccbfb1.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/60ef95894ceebaf236170e8832dcf7e3.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e6e490f703eb6c9bb1278c78ebc2d661.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/8455657dde27aabe6adb7b188e031c11.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c175c239742c7ba8fd67a6d5f99cb1b3.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/60ef95894ceebaf236170e8832dcf7e3.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a0ed1ec316bc54c37c4286c208f55667.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a0ed1ec316bc54c37c4286c208f55667.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c5db41a1f31d6baee7c69990811edb9f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/895dc3dc3a6606ff487a4c4863e18509.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d004d2d115b477ade6af7ddb93db0df8.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/31e55e398e8520d8a36fb5a625a085b8.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c6c2b9f032df58b5f0c459379e8f5b86.png)
![](https://img.xkw.com/dksih/QBM/2021/4/2/2691139995631616/2697593647374336/STEM/b5073896-a564-4c68-9893-831260ee8c89.png)
(1)连接
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/abf80148409afb32ced0b4f59f1ba709.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/64aef11ffceaf9bb188723dab536d177.png)
(2)当
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5c69a23d106fd34aa17b22e9c9a8de36.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/68a83fdd2ba72a2dba0b6b10bb3e06b9.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d40b319212a7e7528b053e1c7097e966.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/abf80148409afb32ced0b4f59f1ba709.png)
(3)如图2,点
![](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/31e55e398e8520d8a36fb5a625a085b8.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/60ef95894ceebaf236170e8832dcf7e3.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/411461db15ee8086332c531e086c40c7.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a9a7de5b70003502e40b95b3b7d3d933.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e91c893da97a083318c1d5bcdf78b2df.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/addb8e20db1fbb40f17dea52f951b907.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/411461db15ee8086332c531e086c40c7.png)
您最近一年使用:0次
7 . 在平面直角坐标系xoy中,直线
(k为常数)与抛物线
交于A,B两点,且A点在
轴右侧,P点的坐标为(0,4)连接PA,PB.(1)△PAB的面积的最小值为____ ;(2)当
时,
=_______
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ac02a054bd0771a56987af33454baaea.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/58aa667ab19224949974aceb65cc690d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d053b14c8588eee2acbbe44fc37a6886.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/44a4eaa80b44625890339d6a0065c241.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c47cc8a873c5a2ef34971ddab7edab32.png)
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