如图,已知抛物线y=![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f89eef3148f2d4d09379767b4af69132.png)
﹣
x﹣2图象与x轴相交于A,B两点(点A在点B的左侧).若C(m,1﹣m)是抛物线上位于第四象限内的点,D是线段AB上的一个动点(不与A,B重合),过点D分别作DE∥BC交AC于E,DF∥AC交BC于F.
(1)求点A和点B的坐标;
(2)求证:四边形DECF是矩形;
(3)连接EF,线段EF的长是否存在最小值?若存在,求出EF的最小值;若不存在,请说明理由.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f89eef3148f2d4d09379767b4af69132.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/9b0a89e3c30f6e4d4c5db4378b05d987.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a4b8503f4706b8321e4e79a87eadea84.png)
(1)求点A和点B的坐标;
(2)求证:四边形DECF是矩形;
(3)连接EF,线段EF的长是否存在最小值?若存在,求出EF的最小值;若不存在,请说明理由.
![](https://img.xkw.com/dksih/QBM/editorImg/2022/12/8/ae870d7c-41b5-419d-a981-59d8735941da.png?resizew=228)
14-15九年级下·山西阳泉·期中 查看更多[6]
2015届山西省阳泉市平定县九年级下学期中考一模数学试卷2016届江苏省扬州市江都二中九年级下学期第一次月考数学试卷2016届黑龙江大庆五十一中九年级下期中考试数学试卷2016届江苏省东台八校九年级下期中考试数学试卷(已下线)【万唯原创】2016年山西中考数学-试题研究-第一部分考点研究 第三章4(已下线)专题02 二次函数中的矩形-【微专题】2022-2023学年九年级数学上册常考点微专题提分精练(浙教版)
更新时间:2016-12-06 02:44:26
|
相似题推荐
解答题-问答题
|
较难
(0.4)
【推荐1】抛物线
交x轴于A,B两点(点A在点B的左边).
(1)如图,若抛物线交y轴正半轴于点C,且
,求抛物线的解析式及点A、B、C的坐标;
(2)在(1)的条件下,点P是直线BC下方的抛物线上一动点,作
轴交
于点
,求
的最大值及此时点P的坐标;
(3)坐标平面内一动点
与点N关于y轴对称,若线段
与抛物线只有一个交点,求
的取值范围.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4d3377bf5c457788e7b8bed444e5c802.png)
![](https://img.xkw.com/dksih/QBM/editorImg/2023/9/25/6b7b9e36-d0bd-49b6-a59d-ba3fbf6a68c5.png?resizew=415)
(1)如图,若抛物线交y轴正半轴于点C,且
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/49c8dbc31b2e14067ef2f34b4e25f114.png)
(2)在(1)的条件下,点P是直线BC下方的抛物线上一动点,作
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d1e68936d0ba227b58221a6eb5ce4017.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/e0629ce42392a7fe9be21d25c39c3e64.png)
(3)坐标平面内一动点
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/15978286ba5722045f6becd89abf0e72.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/411461db15ee8086332c531e086c40c7.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0a6936d370d6a238a608ca56f87198de.png)
您最近一年使用:0次
解答题-证明题
|
较难
(0.4)
名校
【推荐2】已知抛物线
(
)与
轴有且只有一个交点
,且与
轴于交于点
.
(1)求
与
的关系式;
(2)若
时,点
在抛物线的对称轴上;
①若过
点的直线
:
(
)与抛物线只有一个交点;证明:直线
平分
;
②设过
点的直线与抛物线交于
,
点,则
是否为定值,若为定值请求出定值,若不是定值请说明理由.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a90385c676848de67293e3ed6bc000fe.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/20849c00c47cbdc43f18d53341b6c4e5.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/81dea63b8ce3e51adf66cf7b9982a248.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/448c0a5ee776d19ce8e42ac9a5fd27c4.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d053b14c8588eee2acbbe44fc37a6886.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7f9e8449aad35c5d840a3395ea86df6d.png)
(1)求
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0a6936d370d6a238a608ca56f87198de.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/071a7e733d466949ac935b4b8ee8d183.png)
(2)若
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0b550ee821ee1838384835e81fc34b67.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/6fcc42027c8c981b30cd2be2d3438bb0.png)
①若过
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7f9e8449aad35c5d840a3395ea86df6d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0f85fca60a11e1af2bf50138d0e3fe62.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/15b256345d7109e081b7c895591e995d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f2c80c26a794a844127aae7dee87c93b.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0f85fca60a11e1af2bf50138d0e3fe62.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/41a84f45f1a383377ebfb4da189e5f7f.png)
②设过
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/dad2a36927223bd70f426ba06aea4b45.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/1140f9dbba98f88ae58d9ec80fd4a001.png)
您最近一年使用:0次
解答题-问答题
|
较难
(0.4)
名校
【推荐3】跳台滑雪是冬季奥运会比赛项目之一,运动员起跳后的飞行路线可以看作是抛物线的一部分,运动员起跳后的竖直高度
单位:
与水平距离
单位:
近似满足函数关系
,如图记录了甲运动员起跳后的三组数据.
![](https://img.xkw.com/dksih/QBM/2022/12/25/3138722582634496/3146960265822208/STEM/f58d2f8e16ec457791ffb904490f9dd7.png?resizew=195)
(1)直接写出甲运动员起跳后的
与
的函数关系式为___________;
(2)运动员起跳后,裁判根据跳跃后的水平距离打出跳跃得分,其总分为
分,求甲运动员完成本次动作的跳跃得分.
(3)乙运动员的跳跃轨迹近似抛物线,满足函数关系
,若乙运动员的跳跃成绩要超过甲运动员,直接写出
的取值范围.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d053b14c8588eee2acbbe44fc37a6886.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/294f5ba74cdf695fc9a8a8e52f421328.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/81dea63b8ce3e51adf66cf7b9982a248.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/294f5ba74cdf695fc9a8a8e52f421328.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/8352b2e643a7ce605334f1b0e572bfb0.png)
![](https://img.xkw.com/dksih/QBM/2022/12/25/3138722582634496/3146960265822208/STEM/f58d2f8e16ec457791ffb904490f9dd7.png?resizew=195)
(1)直接写出甲运动员起跳后的
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d053b14c8588eee2acbbe44fc37a6886.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/81dea63b8ce3e51adf66cf7b9982a248.png)
(2)运动员起跳后,裁判根据跳跃后的水平距离打出跳跃得分,其总分为
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/8ea61faaf9baeffec026274f9c2c5501.png)
(3)乙运动员的跳跃轨迹近似抛物线,满足函数关系
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/19bbcdaf83646d50a282e7bc4eacae11.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7998276dd6862137ffab8a722d92131c.png)
您最近一年使用:0次
解答题-证明题
|
较难
(0.4)
【推荐1】【问题探究】
![](https://img.xkw.com/dksih/QBM/2022/4/5/2951493440757760/2952596756946944/STEM/ec902a1f-0d55-416e-b215-b95b17c89c46.png?resizew=491)
(1)如图①,点A、B在直线
的两侧,在直线
上找一点P,使得
最小;
(2)如图②,在
中,点P是
内一点,且
.把
绕点B顺时针旋转60°得到
,求证此时
的和最小.
(3)如图③是某高新开发区的一个准备建造成公园的地块
,已知
米,
米,
米,
米,
.为了美观,要在边
下方取一点Q,且点Q必须满足
,现在要在五边形地块
内部修一个游客服务中心P,并且使得游客服务中心P到点B、C、Q的距离和最小,请求出
的最小值.
![](https://img.xkw.com/dksih/QBM/2022/4/5/2951493440757760/2952596756946944/STEM/ec902a1f-0d55-416e-b215-b95b17c89c46.png?resizew=491)
(1)如图①,点A、B在直线
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0f85fca60a11e1af2bf50138d0e3fe62.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0f85fca60a11e1af2bf50138d0e3fe62.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a13ec9a812274ad0839f20ba17348687.png)
(2)如图②,在
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/15c0dbe3c080c4c4636c64803e5c1f76.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/15c0dbe3c080c4c4636c64803e5c1f76.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b9ea84dd750619486f509b3cc2a8470b.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4234cf4d8159f5df0333bcc269ffe099.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/17d933e09afa8e28422255dba0bad2e3.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c7ed53a398b1d6b7b4abbb43a9abcf1f.png)
(3)如图③是某高新开发区的一个准备建造成公园的地块
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/9142a8490de14a87eda628ffa7e28982.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/1e727e30e501f12464754d0ce6955f9e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/dc9e02b21573be7446ddebf001ee8516.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/19faccd324f804e52741aa5e8a3c1c36.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/1144a40a4461cc8fa48b6ca0d990e192.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/9c4dec02850a02a8da56514ffffba952.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/21037e170bdbb322558e79c40c00b454.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/8dcf33167db83de8991a19df297f00ac.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/9142a8490de14a87eda628ffa7e28982.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5fa6790ec184b0cf54636fc51075fccd.png)
您最近一年使用:0次
解答题-问答题
|
较难
(0.4)
【推荐2】如图1,在平面直角坐标系
中,直线
与x轴、y轴分别交于B、C两点,点A为y轴上一点,直线
的解析式为
.
(1)请直接写出点A、B、C的坐标:A_______、B_______、C_______;
(2)如图2,点P为线段
上一点,若
,求出点P的坐标;
(3)如图3,点D是直线
上的动点,以
为边顺时针方向作正方形
,连接
,若
,求点F坐标.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7ee31829d0d4d5f779a957d7df8058ab.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/24edd2a1d145627d07330524017daf5c.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f52a58fbaf4fea03567e88a9f0f6e37e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c9bd144e0e96e4236a14523e0729cacb.png)
![](https://img.xkw.com/dksih/QBM/editorImg/2023/7/10/2476f58d-eea7-448f-b0b0-05c1cdb6a661.png?resizew=158)
(1)请直接写出点A、B、C的坐标:A_______、B_______、C_______;
(2)如图2,点P为线段
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d62e8aadaadebf1454fde21a390ebdea.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a4c899276bb7c0845a2a574cf6e42bdc.png)
![](https://img.xkw.com/dksih/QBM/editorImg/2023/7/10/f368696d-5d08-4d90-8f18-630fc2e1c733.png?resizew=155)
(3)如图3,点D是直线
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f52a58fbaf4fea03567e88a9f0f6e37e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/683c590673eece14fea3319c4fd5eb55.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c10f93679abcee21bacd92c3b1552a0e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/8c4eccda4edcee29a5f15609e85106df.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0aafe7cc93df628b207aea8e9376bb92.png)
![](https://img.xkw.com/dksih/QBM/editorImg/2023/7/10/bad581e0-ac6e-495f-a83f-18f06ef63a2f.png?resizew=362)
您最近一年使用:0次
解答题-证明题
|
较难
(0.4)
【推荐1】定义:从三角形的一个顶点引出一条射线与对边相交,顶点与交点之间的线段把这个三角形分割成两个小三角形,如果分得的两个小三角形中有一个与原三角形相似,那么我们称这条线段为原三角形的相似线,记此小三角形与原三角形的相似比为k.
(1)【理解】如图1,△ABC中,已知D是AC边上一点,∠CBD=∠A.求证:BD是△ABC的相似线;
(2)【探究】如图2,△ABC中,AB=4,BC=2,AC=2
.请用尺规作图法在平面内找一点D、使BC是以A、D为其中两个顶点的三角形的相似线,并直接写出k的值,(提醒:保留作图痕迹,在确认无误后用黑色签字笔将作图痕迹描黑)
(3)【应用】如图3,扇形AOB中,∠AOB=90°,AO=OB=2,C,D分别是OA,OB的中点,P是弧AB上的一个动点,求PC+2PD的最小值.
(1)【理解】如图1,△ABC中,已知D是AC边上一点,∠CBD=∠A.求证:BD是△ABC的相似线;
(2)【探究】如图2,△ABC中,AB=4,BC=2,AC=2
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/619096595112f0340a43b756e114dd3d.png)
(3)【应用】如图3,扇形AOB中,∠AOB=90°,AO=OB=2,C,D分别是OA,OB的中点,P是弧AB上的一个动点,求PC+2PD的最小值.
![](https://img.xkw.com/dksih/QBM/2019/5/16/2204741797634048/2205088647389184/STEM/1961fc08e6ca4ff28fd10e5d71b60029.png?resizew=470)
您最近一年使用:0次
解答题-证明题
|
较难
(0.4)
【推荐2】已知点
,过点
作
轴于点
,
伷于点
,以
为圆心,
长为半径作圆交
于点
,连接
并延长交
于点
.
(1)当点
、
、
在同一条直线上时.
①如图1,点
是否为线段
的中点?若是,请证明:若不是,请说明理由.
②如图2,连接
、
,两线交于点
,当
,
时,求
的长;
(2)如图3,点
为线段
上一动点,过点
作
轴的平行线,分别交
、
于点
、
.若
(
为定值),试探究在点
运动的过程中,
的值是否为定值?如果是,请求出这个定值(用含
的代数式表示);如果不是,请说明理由.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b72e95610805b6cb62cde91333e0d1b9.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/dad2a36927223bd70f426ba06aea4b45.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2514c029d9c30e26f757fb956e5d1680.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5963abe8f421bd99a2aaa94831a951e9.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/465aec2e55491394d6a8bfa3ffb2b833.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7f9e8449aad35c5d840a3395ea86df6d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/dad2a36927223bd70f426ba06aea4b45.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d2be49c37e30a3ced0364c3e74d8c687.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/bd33764ff4efddfe11a98a609753715c.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c5db41a1f31d6baee7c69990811edb9f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/828628c0876b45381c9a0edeb0fec236.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2d1d9218917d85a1dc19e60f076b8bfa.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/acc290b44635265137fdf13146b6a6d9.png)
![](https://img.xkw.com/dksih/QBM/editorImg/2023/8/22/de258f2c-bab2-40e4-a3ed-df4a16548408.png?resizew=376)
(1)当点
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7f9e8449aad35c5d840a3395ea86df6d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/dad2a36927223bd70f426ba06aea4b45.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/acc290b44635265137fdf13146b6a6d9.png)
①如图1,点
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c5db41a1f31d6baee7c69990811edb9f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/20a541b81584a032f571159ea152c85a.png)
②如图2,连接
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/abd13974aebe38eb2a1d744a01ea5aa5.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/aa4c355f11471a38f5583a434a1ddeb3.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/03837b3769eda7f0d3804cc5ad4a6d60.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/9d78abbad68bbbf12af10cd40ef4c353.png)
(2)如图3,点
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ac047e91852b91af639feec23a9598b2.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/828628c0876b45381c9a0edeb0fec236.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ac047e91852b91af639feec23a9598b2.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d053b14c8588eee2acbbe44fc37a6886.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/abd13974aebe38eb2a1d744a01ea5aa5.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/20a541b81584a032f571159ea152c85a.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/54a5d7d3b6b63fe5c24c3907b7a8eaa3.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/73465a1f9aa03481295bf6bd3c6903ac.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a33e66de54cf294d2c8f4f1c5c14774d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/294f5ba74cdf695fc9a8a8e52f421328.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ac047e91852b91af639feec23a9598b2.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ad1a55045bf3fa612155b41584d04a93.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/294f5ba74cdf695fc9a8a8e52f421328.png)
您最近一年使用:0次
解答题-问答题
|
较难
(0.4)
名校
【推荐1】如图①,抛物线
与
轴交于
,
,与
轴交于点
.已知直线
过
,
两点.
![](https://img.xkw.com/dksih/QBM/editorImg/2023/12/11/1c3d6517-ad49-4f1f-95a3-2901e03b9b09.png?resizew=535)
(1)求抛物线和直线
的表达式;
(2)点
是抛物线上的一个动点,
①如图①,若点
为抛物线顶点,连接
,交直线
于点
.求
的面积。
②如图②,抛物线的对称轴
与
轴交于点
,过点
作
,垂足为
.点
是对称轴
上的一个动点,是否存在以点
,
,
,
为顶点的四边形是平行四边形?若存在,求出点
,
的坐标;若不存在,请说明理由.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/415ce7008a89ffca8c3c3edbf13a935e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/81dea63b8ce3e51adf66cf7b9982a248.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a0929421a6188c3122442866b0b85a5e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/08ef03f452410ab19c6246567c427178.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/95f8ef5ab6007dcbc90d01031eb42e2b.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7f9e8449aad35c5d840a3395ea86df6d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c5db41a1f31d6baee7c69990811edb9f.png)
![](https://img.xkw.com/dksih/QBM/editorImg/2023/12/11/1c3d6517-ad49-4f1f-95a3-2901e03b9b09.png?resizew=535)
(1)求抛物线和直线
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0dc5c9827dfd0be5a9c85962d6ccbfb1.png)
(2)点
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/dad2a36927223bd70f426ba06aea4b45.png)
①如图①,若点
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/dad2a36927223bd70f426ba06aea4b45.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/bd33764ff4efddfe11a98a609753715c.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/36aae82d53f2a35d2f95f467bd5b76cf.png)
②如图②,抛物线的对称轴
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0f85fca60a11e1af2bf50138d0e3fe62.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/2a30f3a8b673cc28bd90c50cf1a35281.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/58cc90fee532e50d319081d571410421.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a0ed1ec316bc54c37c4286c208f55667.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/acc290b44635265137fdf13146b6a6d9.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0f85fca60a11e1af2bf50138d0e3fe62.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2a30f3a8b673cc28bd90c50cf1a35281.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a0ed1ec316bc54c37c4286c208f55667.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/dad2a36927223bd70f426ba06aea4b45.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/acc290b44635265137fdf13146b6a6d9.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/dad2a36927223bd70f426ba06aea4b45.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/acc290b44635265137fdf13146b6a6d9.png)
您最近一年使用:0次
解答题-问答题
|
较难
(0.4)
【推荐2】抛物线
与x轴交于点
,与y轴交于点C.
(1)
(2)求抛物线的解析式
(3)在抛物线对称轴上找一点M,使
的周长最小,并求出点M的坐标和
的周长
(4)若点P是x轴上的一个动点,过点P作
交抛物线于点Q,在抛物线上是否存在点Q,使B、C、P、Q为顶点的四边形为平行四边形?若存在请求出点Q的坐标,若不存在请说明理由.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/9a0d44326c214c7a5ecc3068a29ec96f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/cf49c761760a084725ce8fee4a670373.png)
![](https://img.xkw.com/dksih/QBM/editorImg/2023/11/30/5698dc56-1c31-4a3e-80d9-84380fbb98de.png?resizew=176)
(1)
(2)求抛物线的解析式
(3)在抛物线对称轴上找一点M,使
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/cad3e2b2689dfe97ec82d473ab6cf469.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/cad3e2b2689dfe97ec82d473ab6cf469.png)
(4)若点P是x轴上的一个动点,过点P作
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/9e7b5caf93535240f8e073fd0a2bcff2.png)
您最近一年使用:0次
解答题-问答题
|
较难
(0.4)
解题方法
【推荐3】问题提出
(1)如图1,在矩形
中,
,点E为
的中点,点F在
上,过点E作
交
于点G.若
,则
的面积为_________.
![](https://img.xkw.com/dksih/QBM/editorImg/2022/11/30/418632e0-1d5a-423e-b4dd-505a26440f75.png?resizew=454)
问题探究
(2)如图2,在矩形
中,
,点P是
边上一动点,点Q是
的中点将.
沿着
折叠,点A的对应点是
,将
沿着
折叠,点D的对应点是
.请问是否存在这样的点P,使得点P、
、
在同一条直线上?若存在,求出此时
的长度;若不存在,请说明理由.
问题解决
(3)某精密仪器厂接到生产一种特殊四边形金属部件的任务,部件要求:如图3,在四边形
中,
,点D到
的距离为
,且
.若过点D作
,过点A作
的垂线,交
于点E,交
的延长线于点H,过点C作
于点F,连接
.设
的长为
,四边形
的面积为
.
①根据题意求出y与x之间的函数关系式;
②在满足要求和保证质量的前提下,仪器厂希望造价最低.已知这种金属材料每平方厘米造价60元,请你帮忙求出这种四边形金属部件每个的造价最低费用.
(1)如图1,在矩形
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/411b38a18046fea8e9fab1f9f9b80a5f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7df3b2901ad26337818f75e81448ebb5.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/51db93dcdc7f70db8eba5c68cc42a26a.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/00bab17635a999236e8d2e35017a208d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d72347be3fa9c3307f54a4c7a9c8bd0e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e67da1bf51e5f87750a63dc9e856ee87.png)
![](https://img.xkw.com/dksih/QBM/editorImg/2022/11/30/418632e0-1d5a-423e-b4dd-505a26440f75.png?resizew=454)
问题探究
(2)如图2,在矩形
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/411b38a18046fea8e9fab1f9f9b80a5f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/8a9f02a8b8f513493a9a7b6ca8c28f19.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/03902478df1a55bc99703210bccab910.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/9d78abbad68bbbf12af10cd40ef4c353.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7a855335176fc36a15017f50a8561348.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2cdba1337ec85fa9722cb4b320a82ae6.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e7c314398e26ffc7164b82946eeb4273.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/1703ac7db44d1032aabc54b33413454d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7a5f1641947153c80b987320885a2b57.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e5b3bd5e6bc2a0a277d279bb01af9584.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e7c314398e26ffc7164b82946eeb4273.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e5b3bd5e6bc2a0a277d279bb01af9584.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/20a541b81584a032f571159ea152c85a.png)
问题解决
(3)某精密仪器厂接到生产一种特殊四边形金属部件的任务,部件要求:如图3,在四边形
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/411b38a18046fea8e9fab1f9f9b80a5f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/9547f6b5c7c54d216ecea72becb7d373.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0dc5c9827dfd0be5a9c85962d6ccbfb1.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/9da684fa05f38fa456b69157870036a3.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/6b62cff3b0a1c6da53ca6893ed5b0f7d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/6992555878dbb49a22e02435d3072b74.png)
![](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/6b1bd1adfe4cc6566218f19970c2fd3b.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5982fccf93ae8445dafb16932dedc116.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/60ef95894ceebaf236170e8832dcf7e3.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/68a83fdd2ba72a2dba0b6b10bb3e06b9.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5be6e964c405a9cdf6623f9219898fd3.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/411b38a18046fea8e9fab1f9f9b80a5f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/eacd892f03da01942140679667792250.png)
①根据题意求出y与x之间的函数关系式;
②在满足要求和保证质量的前提下,仪器厂希望造价最低.已知这种金属材料每平方厘米造价60元,请你帮忙求出这种四边形金属部件每个的造价最低费用.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/45c210e071980519bd7dacebb673d72d.png)
您最近一年使用:0次