在平面直角坐标系
中,对于任意两点
与
,我们重新定义这两点的“距离”.
①当
时,
为点
与点
的“远距离”
;
即
,当
时,
为点
与点
的“远距离”
,
即
.
②点
与点
的“总距离”
为
与
的和,
即
.
根据以上材料,解决下列问题:
(1)已知点
,则
______,
______;
(2)若点
在第一象限,且
,求点B的坐标;
(3)①若点
,且
,所有满足条件的点C组成了图形W,请在图1中画出图形W;
②已知点
,
,若在线段
上存在点E,使得点E满足
且
,请直接写出m的取值范围.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7ee31829d0d4d5f779a957d7df8058ab.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5b225d772013d021cf1bfe7b9421fa5f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a6b7e35faab6d74fa0c36599c39d1698.png)
![](https://img.xkw.com/dksih/QBM/editorImg/2023/6/30/499b4ca3-42a2-423b-89d5-856c88b83063.png?resizew=549)
①当
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7c2f42c247568ba2a6b4bc9bb698abf4.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/bc6abf3f9b0ebcdc47a028c781b7edb9.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2708fa6298e52f617383efc175b71ddc.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/9b9cb8e6ff801523b0304576cd69fd2d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a3d108766f29e468f10347be3fc91de3.png)
即
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/be8b38491bfa7d59c7ed3f216cc5c02e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/8658d93d4685b6c79ec86d7a4602c14d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f0761e63cb3a4113d50f6bf808cdc031.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2708fa6298e52f617383efc175b71ddc.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/9b9cb8e6ff801523b0304576cd69fd2d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a3d108766f29e468f10347be3fc91de3.png)
即
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/3fc41edfa452f6b9cdf33d806ec8a2a9.png)
②点
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2708fa6298e52f617383efc175b71ddc.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/9b9cb8e6ff801523b0304576cd69fd2d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e9ed4f77d0fc848c8952f1268a24e6e1.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/bc6abf3f9b0ebcdc47a028c781b7edb9.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f0761e63cb3a4113d50f6bf808cdc031.png)
即
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/070a8a296bab029d75f4caa949bf15d2.png)
根据以上材料,解决下列问题:
(1)已知点
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ab47bf43b2c5d6395129b80ddfbb1b24.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/48819294f486ce8f047a02eee0b451c5.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4964f42cc1bacaf93f1bda02c2ccd873.png)
(2)若点
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c150995dd6e95046f3d487ca663ab22f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/eb7af8ea3df37f3190107a0dc75ad5f1.png)
(3)①若点
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ca9a016fd7021b9e9625c8d5f0938ad6.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a6576bf4e3bb596647354e392c0224fb.png)
②已知点
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b62769b7177ef4bc952dc1dd51d6b510.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5af32e22f604ddbd3681a5fd29f31bb3.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/411461db15ee8086332c531e086c40c7.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b6209007db30effda8910595af4b527d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/03d86e1a473da44e77976f03aee95e91.png)
更新时间:2023-06-25 23:26:47
|
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解答题-问答题
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【推荐1】对于平面内的两点P,Q,给出如下定义:以P,Q为顶点作三角形,若PQ边上的高与PQ相等,则称该三角形为点P,Q的“完美三角形”.
(1)已知线段AB=2
①若以线段AB为边作等边△ABC,则△ABC 点A,B的“完美三角形”(填“是”或“不是”);
②若以AB为底的等腰△ABD是A,B的“完美三角形”,则AD= ;
③若Rt△ABE是点A,B的“完美三角形”,则AE= .
(2)如图,在平面直角坐标系中,已知M(-3,0),点N是y轴上的动点,以MN为边作Rt△MNG,使得△MNG是点M,N的“完美三角形”.当点G恰好落在坐标轴上时,请直接写出符合条件的点N的坐标.
(1)已知线段AB=2
①若以线段AB为边作等边△ABC,则△ABC 点A,B的“完美三角形”(填“是”或“不是”);
②若以AB为底的等腰△ABD是A,B的“完美三角形”,则AD= ;
③若Rt△ABE是点A,B的“完美三角形”,则AE= .
(2)如图,在平面直角坐标系中,已知M(-3,0),点N是y轴上的动点,以MN为边作Rt△MNG,使得△MNG是点M,N的“完美三角形”.当点G恰好落在坐标轴上时,请直接写出符合条件的点N的坐标.
![](https://img.xkw.com/dksih/QBM/editorImg/2022/9/14/0046d29c-396f-4f23-8ba0-926202193a20.png?resizew=220)
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较难
(0.4)
【推荐2】已知函数
(b,c为常数)的图象经过点
.
(1)求b,c满足的关系式;
(2)设该函数图象的顶点坐标是
,当b的值变化时,求k关于h的函数解析式;
(3)若该函数的图象不经过第三象限,当
时,函数的最大值与最小值之差为16,求b的值.
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![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e4ca651bfc89628a3b05c6e87ce5d6f0.png)
(1)求b,c满足的关系式;
(2)设该函数图象的顶点坐标是
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/19baf5ac40a3fc28c20e0307ada63447.png)
(3)若该函数的图象不经过第三象限,当
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解答题-问答题
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【推荐1】已知抛物线
经过点
,且经过直线
与x轴的交点B及与y轴的交点C.
![](https://img.xkw.com/dksih/QBM/editorImg/2022/10/14/32737e37-8935-4901-8980-4fcfa4708fb2.png?resizew=411)
(1)求抛物线的解析式;
(2)求抛物线的顶点P的坐标及△ABP的面积;
(3)在平面内是否存在点D,使A、B、C、D 四点组成的四边形是平行四边形?若存在,请直接写出符合条件的点D坐标,若不存在,请说明理由.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/3ac8b0eb4aa1cbe23125aa2f6d35337c.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/290c9c13774d1a1f348a02d0aa5f0ff6.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d052c9b3f6cc79d1dba2f5e08ef78e44.png)
![](https://img.xkw.com/dksih/QBM/editorImg/2022/10/14/32737e37-8935-4901-8980-4fcfa4708fb2.png?resizew=411)
(1)求抛物线的解析式;
(2)求抛物线的顶点P的坐标及△ABP的面积;
(3)在平面内是否存在点D,使A、B、C、D 四点组成的四边形是平行四边形?若存在,请直接写出符合条件的点D坐标,若不存在,请说明理由.
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解答题-问答题
|
较难
(0.4)
【推荐2】在同一平面内,如果线段外一点到这条线段所在的直线的距离是2,我们称这个点为这条线段的“标准距离点”.例如,图1中点P为线段
外一点,点P到线段
所在的直线的距离
是2,则称点P是线段
的“标准距离点”.如图2,平面直角坐标系
中,点
,点
在第二象限.
,
,
中,线段
的“标准距离点”是______(只填字母);
(2)若点B是线段
的“标准距离点”.
①a的值为______;
②点C是x轴上一点(点C不与点A重合),三角形
的面积等于三角形
的面积,直接写出点C的坐标;
③已知点
是线段
的“标准距离点”,其中
,n是正数,连接
交线段
于点E,点F在x轴上,如果三角形
的面积等于三角形
的面积,求点F的坐标(用含m的式子表示).
![](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/ef49a3ca580a144cc65a609c167facc1.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/411461db15ee8086332c531e086c40c7.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7ee31829d0d4d5f779a957d7df8058ab.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/448c0a5ee776d19ce8e42ac9a5fd27c4.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/36351cd138a57a1d22ee9bb07d766e82.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/8dbbb76c7a42b124d474b652abdbadde.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2daffb7ae69a34b429698884a1eb2a74.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/33edfcae11d0ca1281d634473b454c93.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ef4113c492885ba7c47fe42ac792578f.png)
(2)若点B是线段
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ef4113c492885ba7c47fe42ac792578f.png)
①a的值为______;
②点C是x轴上一点(点C不与点A重合),三角形
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/fb802b0cd77d772dceff0d9ff6c879ac.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e4819c39c281427826e1b3f7a4c2b720.png)
③已知点
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/518dfce0a9aab04171383586c5077146.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ef4113c492885ba7c47fe42ac792578f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/fa204d6b5183969f6da37f369eb7293d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/03902478df1a55bc99703210bccab910.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b90e0f35eda1a729fed485f83da5ea9d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/34be4e71cabf458f17a6cd7f24bc70af.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/87c0bfeadcf17b2a45896071f07a4a5a.png)
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