在平面直角坐标系
中,对于两个点
,
和图形
,如果在图形
上存在点
,
(
,
可以重合)使得
,那么称点
与点
是图形
的“一对平衡点”.如图1,已知点
.
![](https://img.xkw.com/dksih/QBM/editorImg/2023/11/18/411be7fd-b295-4495-96da-dcdd363083f9.png?resizew=473)
(1)设点
与线段
上一点的距离为
,则
的最小值是______,最大值是______;
(2)在
,
,
这三个点中,与点
是线段
的“一对平衡点”的是______;
(3)如图2,已知
的半径为1,点
的坐标为
.若点
在第一象限,且点
与点
是
的“一对平衡点”,求
的取值范围;
(4)如图3,已知点
,以点
为圆心,
长为半径画弧,交
轴的正半轴于点
.点
(其中
是坐标平面内一个动点,且
,
是以点
为圆心,半径为2的圆,若
上的任意两个点都是
的“一对平衡点”,直接写出
的取值范围.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7ee31829d0d4d5f779a957d7df8058ab.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/91edc7e2d4811f5ea6c01284cf00393a.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/91edc7e2d4811f5ea6c01284cf00393a.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/aa60af8a0b0a4c748e50f8b677677183.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/91edc7e2d4811f5ea6c01284cf00393a.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/22bffeb656a376069508b0b51b249c96.png)
![](https://img.xkw.com/dksih/QBM/editorImg/2023/11/18/411be7fd-b295-4495-96da-dcdd363083f9.png?resizew=473)
(1)设点
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/1dde8112e8eb968fd042418dd632759e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f52a58fbaf4fea03567e88a9f0f6e37e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5c02bc0c74292b1e8f395f90935d3174.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5c02bc0c74292b1e8f395f90935d3174.png)
(2)在
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/eb7542797821b197cbc64d720d1cc7c4.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ca17ce097cb416ed64a3e18b358957b6.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/03481fede2a123a58db11bbb863548de.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/1dde8112e8eb968fd042418dd632759e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f52a58fbaf4fea03567e88a9f0f6e37e.png)
(3)如图2,已知
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/3d97cdc586744d208b6f69c9813af977.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/8455657dde27aabe6adb7b188e031c11.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/8b569572c8d9bf05d78d3ab741e68bb2.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/812367a7a669dd720d2f1628e2fdb019.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/3d97cdc586744d208b6f69c9813af977.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/81dea63b8ce3e51adf66cf7b9982a248.png)
(4)如图3,已知点
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d25339f9fb760f79096c085b3ee38f23.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/1dde8112e8eb968fd042418dd632759e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2c4cd68cc82e90a5e2049a7ea3171b84.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/81dea63b8ce3e51adf66cf7b9982a248.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/cf3834d7ec7531f3c3c0ce9b286f7a49.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/dad0f00d7f0acc53d9774923580a60bc.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/406bd648374e4347c3ea29f004087ee4.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f42f56b246c0eecf454c6ca8f956fb04.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/669e8dfb2b45e6f74d86408343a18fe2.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c5db41a1f31d6baee7c69990811edb9f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c38d239445fb31536dc29e518a7d0e76.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/669e8dfb2b45e6f74d86408343a18fe2.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2c94bb12cee76221e13f9ef955b0aab1.png)
![](https://img.xkw.com/dksih/QBM/editorImg/2023/11/18/38739e04-e48e-4245-a4d6-2675aa0f83e6.png?resizew=241)
更新时间:2023-12-10 20:34:55
|
相似题推荐
解答题-作图题
|
较难
(0.4)
【推荐1】如图1,在平面直角坐标系中,已知
,
,
,连接
,并过点C作
的平行线l.动点P、Q分别以每秒1个单位和每秒3个单位的速度,从A、C两点同时出发水平向左运动.运动过程中连接
,当
垂直于直线l时,点Q提速至每秒5个单位并继续向左运动.当点P运动到点B时,P、Q两点同时停止运动.设运动时间为t.
时,点P的坐标为______,点Q的坐标为______;
(2)连接
、
得到三角形
,在整个运动过程中,是否存在某个时刻,使得三角形
的面积为10?若存在,求出此时点P的坐标;若不存在,请说明理由.
(3)在点P、Q出发的同时,动点M从点O出发,以每秒1.5个单位的速度沿y轴正方向运动.当点P停止运动时,点M也随之停止运动.在运动过程中,连接
、
,分别在
和
的内部作射线
、
,使得
,
,直线
、
交于点N.请直接写出整个运动过程中
、
与
的关系,标注t的取值范围;并选择其中一种情况,画图分析说明.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/29f774f8a340c533ee29a03f31fb85f2.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0da15b159145d73f0dc1c36d4b897d16.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/dcd197350027807525ad0e1d7c403ba5.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f52a58fbaf4fea03567e88a9f0f6e37e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f52a58fbaf4fea03567e88a9f0f6e37e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7a5f1641947153c80b987320885a2b57.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7a5f1641947153c80b987320885a2b57.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a5b9d83969b6a8e27e57ab71b34e2b81.png)
(2)连接
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/abd13974aebe38eb2a1d744a01ea5aa5.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/9f0009063fe00277645aff1be6e32471.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/cd6c71a0da6a878a5b12bf8a8e784645.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/cd6c71a0da6a878a5b12bf8a8e784645.png)
(3)在点P、Q出发的同时,动点M从点O出发,以每秒1.5个单位的速度沿y轴正方向运动.当点P停止运动时,点M也随之停止运动.在运动过程中,连接
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/892909e49156f7dcc0650fcd65243877.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/db8305c4ffbf876642440c3d28e91e9f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/adb97dcf23e3af8dffbb6a96847ffea9.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/78a27ef7bdec098c821a740e7043db15.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e0629ce42392a7fe9be21d25c39c3e64.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/bf3d566704b44ea4ef1f99c37bd46902.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5dfd226b42aa8692dd0014f826336b3e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/989bef6fd9e334f327479df6e6cf7b8a.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e0629ce42392a7fe9be21d25c39c3e64.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/bf3d566704b44ea4ef1f99c37bd46902.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/adb97dcf23e3af8dffbb6a96847ffea9.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/9b537d1ae7648cdeebb5adf19721356d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b5e8e435259ab192d798bb8bf7774cdf.png)
您最近一年使用:0次
解答题-作图题
|
较难
(0.4)
解题方法
【推荐2】对于正数
,用符号
表示
的整数部分,例如:
,
,
.点
在第一象限内,以
为对角线的交点画一个矩形,使它的边分别与两坐标轴垂直,其中垂直于
轴的边长为
,垂直于
轴的边长为
,那么,把这个矩形覆盖的区域叫做点
的伴随域.例如,点
的伴随域是一个以
为对角线交点,长为
,宽为
的矩形所覆盖的区域,如图
所示,它的面积是
.
![](https://img.xkw.com/dksih/QBM/2021/8/24/2793164304130048/2798111890644992/STEM/c6f14dae-d44b-4b83-8433-1a10965e7f79.png)
根据上面的定义,回答下列问题:
(1)在图
所示的坐标系中画出点
的伴随域,该伴随域的面积是;
(2)点
,
的伴随域重叠部分面积为
,求
的值;
(3)已知点
在直线
上,且点
的伴随域的面积
满足
,那么
的取值范围是.(直接写出结果)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/81dea63b8ce3e51adf66cf7b9982a248.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2c4f5908d6a1217e493ed7586b6964dd.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/81dea63b8ce3e51adf66cf7b9982a248.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/de3a56a0bcbd83a4b2a542dd9b767cfd.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/447edcfb531a10755c19709915f0376e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ae9feb047004eb507de484a7f8c5b6a0.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b8530bca5123179cfede86d03738495e.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/0a6936d370d6a238a608ca56f87198de.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/81dea63b8ce3e51adf66cf7b9982a248.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/946edf1fb138fb3f92b1f8938646c079.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5963abe8f421bd99a2aaa94831a951e9.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/aaa6b27b6442cafd26eaa354c45bd857.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/aaa6b27b6442cafd26eaa354c45bd857.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5ca7d1107389675d32b56ec097464c14.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/61128ab996360a038e6e64d82fcba004.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/bdaa19de263700a15fcf213d64a8cd57.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/6f8c4c029e552954bd493b49aeab82d5.png)
![](https://img.xkw.com/dksih/QBM/2021/8/24/2793164304130048/2798111890644992/STEM/c6f14dae-d44b-4b83-8433-1a10965e7f79.png)
根据上面的定义,回答下列问题:
(1)在图
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/61128ab996360a038e6e64d82fcba004.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0c510c1a1dc778ac2df920da7ea0efbf.png)
(2)点
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/43f77002a347ba1e770bb715d9bfbd51.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4087aa5f55408701ab3ccb9f7f75bfd1.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/61128ab996360a038e6e64d82fcba004.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0a6936d370d6a238a608ca56f87198de.png)
(3)已知点
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/245f674f5cebcb064a6e56cf2107c97a.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5ab466aedd6e176088d8dee7bc3e3aaa.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7f9e8449aad35c5d840a3395ea86df6d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/cf231f8f86fb922df4ca0c87f044cec3.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a3a69e41513cb9689cbee01a0781e226.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/294f5ba74cdf695fc9a8a8e52f421328.png)
您最近一年使用:0次
解答题-证明题
|
较难
(0.4)
【推荐1】如图,在
中,对角线
相交于点O,
,点E在线段
上,且
.
![](https://img.xkw.com/dksih/QBM/editorImg/2023/4/11/412fabca-599c-450c-ad92-d597bd62d000.png?resizew=160)
(1)求证:
;
(2)若F,G分别是
的中点,且
;
①求证:
;
②当
时,求
的面积.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5138a9f70d5e8b0580e30fef6eb7baef.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/73b3c032441543354c154ee67d744abb.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c2d6ceed6e5a36193bcb5a557853dbee.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/828628c0876b45381c9a0edeb0fec236.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/14b1e82dd0c415ab79422952ceeefe80.png)
![](https://img.xkw.com/dksih/QBM/editorImg/2023/4/11/412fabca-599c-450c-ad92-d597bd62d000.png?resizew=160)
(1)求证:
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d320f180419175d75eebc618cc458b39.png)
(2)若F,G分别是
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/9cd89207fd032c16774744514a4b8458.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/57ebb33adb2310a6e03918761e68204a.png)
①求证:
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/43dad1f58af0e8cb85dd1bfa7df597b9.png)
②当
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e458dd1ce1c8dcdc2becac146d9dc231.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5138a9f70d5e8b0580e30fef6eb7baef.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,平行四边形
的顶点
、
在
轴上,点
在
轴,
,
,
.若实数
、
、
满足
.
![](https://img.xkw.com/dksih/QBM/editorImg/2024/4/5/b1d5aa46-33a3-47b6-a37f-1a0d1fab23a5.png?resizew=456)
(1)求点
,
,
,
的坐标.
(2)如图2,连接
,将
绕点
顺时针旋转
,旋转得
,
轴正半轴上是否存在一点
,能使以点
、
、
、
为顶点的四边形是平行四边形?若存在,求点
的坐标;若不存在,请说明理由.
(3)如图3,
,
为
内一点,连接
、
、
,直接写出
的最小值为________.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/411b38a18046fea8e9fab1f9f9b80a5f.png)
![](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/81dea63b8ce3e51adf66cf7b9982a248.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/b83770dfcae8b8e1288aa85d50a63d0f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f9199b50dd0036be9b764c621d1d46f7.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/8956001a32d89c3ef9a68a2a7dbbbc14.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0a6936d370d6a238a608ca56f87198de.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2c94bb12cee76221e13f9ef955b0aab1.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/071a7e733d466949ac935b4b8ee8d183.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/1c4c81ccf7b5cb96d1cf98c9260aba02.png)
![](https://img.xkw.com/dksih/QBM/editorImg/2024/4/5/b1d5aa46-33a3-47b6-a37f-1a0d1fab23a5.png?resizew=456)
(1)求点
![](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/c5db41a1f31d6baee7c69990811edb9f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/8455657dde27aabe6adb7b188e031c11.png)
(2)如图2,连接
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d40b319212a7e7528b053e1c7097e966.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d4686f39b38d5b90309ee73ed89a0640.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/1dde8112e8eb968fd042418dd632759e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c567ef2391627670bc0e397cee447193.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/758e5b58ddf760c71d92e9e156e7c386.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/1dde8112e8eb968fd042418dd632759e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/97c01fdc7bc471af0b264a04aef0823e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/6795cae2df43a722e1355e9562d93c09.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2a30f3a8b673cc28bd90c50cf1a35281.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/97c01fdc7bc471af0b264a04aef0823e.png)
(3)如图3,
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/9c77cb2f11c66a269bbd9d63e4bb6d1c.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/dad2a36927223bd70f426ba06aea4b45.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ab2a2834d80ff574e79eae8ca8d4e94f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/bd33764ff4efddfe11a98a609753715c.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e0629ce42392a7fe9be21d25c39c3e64.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d2be49c37e30a3ced0364c3e74d8c687.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/531c25c43032645d442c54608adbe1e3.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】一次函数 y=−
x+6 的图象与x轴、y轴分别交于点A、B,与直线y=
x相交于点C,过点B作x轴的平行线l,点P是直线l上的一个动点.
(1)点A的坐标为 ,点B的坐标为 ;
(2)若S△AOC=S△BCP,求点P的坐标;
(3)若点E是直线y=
x上的一个动点,当△APE是以AE为斜边的等腰直角三角形时,点E的坐标为 .
(4)在(3)的条件下,当点P在AE右侧时,Q为平面内一点,EQ=2,连接OQ,将线段OQ绕着点O逆时针旋转90°,得到线段OM,连接QM、EM,直接写出线段EM的取值范围是 .
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/8b2a698891d42c70b597f0da4f215f09.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d59ab85c075a09d55d69e159e4abb268.png)
(1)点A的坐标为 ,点B的坐标为 ;
(2)若S△AOC=S△BCP,求点P的坐标;
(3)若点E是直线y=
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d59ab85c075a09d55d69e159e4abb268.png)
(4)在(3)的条件下,当点P在AE右侧时,Q为平面内一点,EQ=2,连接OQ,将线段OQ绕着点O逆时针旋转90°,得到线段OM,连接QM、EM,直接写出线段EM的取值范围是 .
![](https://img.xkw.com/dksih/QBM/editorImg/2022/10/25/3e550a67-67fe-41d4-b8f0-c74ea0831c86.png?resizew=551)
您最近一年使用:0次
解答题-作图题
|
较难
(0.4)
【推荐2】已知:
,点B为x轴上的一动点,过点B作x轴的垂线交
的垂直平分线于点P.
![](https://img.xkw.com/dksih/QBM/editorImg/2022/12/8/bbd52fc9-2c1a-4557-94d5-3244dafc9df7.png?resizew=385)
(1)请利用图(1)进行探讨:若点
,则点P的坐标为___________;若点
,则点P的坐标为___________;若点
时,点P的坐标为___________;
(2)设
,请列出y关于x函数关系式,并在图2中画出点P的运动轨迹l.
(3)图2中,点
,有动点G,
;按下列要求作图,轨迹l与直线
相交于点A,B(A点在左),点Q为线段
的中点,连接
,直接写出线段
的长度范围.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e67d8e00410022f3095614f6288a092d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f52a58fbaf4fea03567e88a9f0f6e37e.png)
![](https://img.xkw.com/dksih/QBM/editorImg/2022/12/8/bbd52fc9-2c1a-4557-94d5-3244dafc9df7.png?resizew=385)
(1)请利用图(1)进行探讨:若点
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/40e9ab82047f838a5c1a0a90b37a6c38.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b1ddc891fd630d45ed75baf48fd00658.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c516054bb6136f79f69818d7e3085f04.png)
(2)设
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/8701e0cce437edc830438b4fe6277d89.png)
(3)图2中,点
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/6890c26bf4fe784f5fce5e3967c44662.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5e691e76614be733eee2f2845b298847.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/107babba45f110012183dc4dc54490f7.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/77a7e4a6765ce78b05ee97764771e01f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f53330c107f8245290a5a42c3d356acd.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f53330c107f8245290a5a42c3d356acd.png)
您最近一年使用:0次
解答题-计算题
|
较难
(0.4)
【推荐3】数学兴趣小组探究平面内横、纵坐标满足特定关系的动点的运动轨迹问题:
(1)组长提出问题:动点
随着t的变化形成的运动轨迹是什么?
甲同学的思考:t取3个特殊值得到3个点坐标,发现3点在一条直线上,可以利用待定系数法求出该直线的表达式;乙同学的思考:令
,
,通过消去t得到y与x的函数关系式.
______(填甲或乙)同学的方法更严谨,点
运动轨迹的函数表达式为______;
(2)如图,在平面直角坐标系中,已知点
,
,Q为坐标系内一点且
,点M从点A出发以每秒8个单位的速度沿x轴向左运动,同时点N从点O出发以每秒6个单位的速度沿y轴向上运动,点P是MN的中点,设运动时间为t.求点P的运动轨迹的函数表达式,并计算当
时PQ的最小值;
![](https://img.xkw.com/dksih/QBM/2023/5/27/3246866763276288/3248733433135104/STEM/787f5309da5b4fe896c1ac909f1660b0.png?resizew=163)
(3)老师给出坐标平面内两个动点:
,
.
丙学说:点T、K的运动轨迹都是直线;丁同学说:点T、K在运动过程中不可能重合;请你判断两人结论是否正确并说明理由.
(1)组长提出问题:动点
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ac8c1a983a410c080727fd1d4d1541d4.png)
甲同学的思考:t取3个特殊值得到3个点坐标,发现3点在一条直线上,可以利用待定系数法求出该直线的表达式;乙同学的思考:令
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/9ac1aa0dc7af14bac3389c2d635bee30.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5c517b5fcd79e6a89c955e3e1b33cddd.png)
______(填甲或乙)同学的方法更严谨,点
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ac8c1a983a410c080727fd1d4d1541d4.png)
(2)如图,在平面直角坐标系中,已知点
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5e8fd1ce0df99890a2147191d6fe8961.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/25ce8d4a9d432afe03a988ae2d49c28c.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4285ae8617bd752bfc059caf65e4c1d0.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/8cbeede118c407a800b05757b9a1393e.png)
![](https://img.xkw.com/dksih/QBM/2023/5/27/3246866763276288/3248733433135104/STEM/787f5309da5b4fe896c1ac909f1660b0.png?resizew=163)
(3)老师给出坐标平面内两个动点:
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2b3435e109dbfc8cbd368b7af47f3b66.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/519c8e14a1c18b34341a49120a7e3423.png)
丙学说:点T、K的运动轨迹都是直线;丁同学说:点T、K在运动过程中不可能重合;请你判断两人结论是否正确并说明理由.
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,在矩形ABCD中,AB=20cm,BC=4cm,点p从A开始折线A——B——C——D以4cm/秒的 速度 移动,点Q从C开始沿CD边以1cm/秒的速度移动,如果点P、Q分别从A、C同时出发,当其中一点到达D时,另一点也随之停止运动,设运动的时间t(秒)
![](https://img.xkw.com/dksih/QBM/2015/1/30/1573791015608320/1573791021449216/STEM/669e938b-bc9d-43cb-b9bb-41e08c6ff237.png?resizew=374)
(1)t为何值时,四边形APQD为矩形.
(2)如图(2),如果⊙P和⊙Q的半径都是2cm,那么t为何值时,⊙P和⊙Q外切?
![](https://img.xkw.com/dksih/QBM/2015/1/30/1573791015608320/1573791021449216/STEM/669e938b-bc9d-43cb-b9bb-41e08c6ff237.png?resizew=374)
(1)t为何值时,四边形APQD为矩形.
(2)如图(2),如果⊙P和⊙Q的半径都是2cm,那么t为何值时,⊙P和⊙Q外切?
您最近一年使用:0次
解答题-问答题
|
较难
(0.4)
【推荐2】如图,在△ABC中,∠B=90°,AB=6米,BC=8米,动点P以2米/秒得速度从A点出发,沿AC向C移动,同时,动点Q以1米/秒得速度从C点出发,沿CB向B移动.当其中有一点到达终点时,他们都停止移动,设移动的时间为t秒.
(1)求△CPQ的面积S(平方米)关于时间t(秒)的函数关系式;
(2)在P、Q移动的过程中,当△CPQ为等腰三角形时,求出t的值;
(3)以P为圆心,PA为半径的圆与以Q为圆心,QC为半径的圆相切时,求出t的值.
(1)求△CPQ的面积S(平方米)关于时间t(秒)的函数关系式;
(2)在P、Q移动的过程中,当△CPQ为等腰三角形时,求出t的值;
(3)以P为圆心,PA为半径的圆与以Q为圆心,QC为半径的圆相切时,求出t的值.
![](https://img.xkw.com/dksih/QBM/2018/12/4/2089710696022016/2096022647275520/STEM/9e85e52bcd4942c7a69e01fc2943ffeb.png?resizew=168)
您最近一年使用:0次