如图,正方形四个顶点分别位于两个反比例函数
和
的图象的四个分支上,则
的值=______ .
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/85410ff00c81839ff9a64bf86dc36f5e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5bde98b608331387ffbfaab1845cb662.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b6a24198bd04c29321ae5dc5a28fe421.png)
![](https://img.xkw.com/dksih/QBM/editorImg/2023/10/25/0d664956-946f-43b8-bcb0-1210ba5554b1.png?resizew=200)
23-24九年级上·安徽合肥·期中 查看更多[8]
更新时间:2023-10-23 13:20:56
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【推荐1】如图,点P1(x1,y1),点P2(x2,y2),…,点Pn(xn,yn)在函数
(x>0)的图象上,△P1OA1,△P2A1A2,△P3A2A3,…,△PnAn﹣1An都是等腰直角三角形,斜边OA1,A1A2,A2A3,…,An﹣1An都在x轴上(n是大于或等于2的正整数),则点P3的坐标是____ ;点Pn的坐标是_____ (用含n的式子表示).
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d89714628fa4c5f8f18bbd1101a034eb.png)
![](https://img.xkw.com/dksih/QBM/2013/9/10/1573680434479104/1573680440737792/STEM/81f03c06d7c94561992bec01298e05ef.png?resizew=197)
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【推荐2】如图,
为坐标原点,四边形
是菱形,
在
轴的正半轴上,
,反比例函数
在第一象限内的图象经过点
,与
交于点
,则
的面积等于____ .
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/1dde8112e8eb968fd042418dd632759e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/3ea16ceca816f7d3d50650af141baf42.png)
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【推荐1】如图,反比例函数y=
(k≠0)的图象经过△ABD的顶点A,B,交BD于点C,AB经过原点,点D在y轴上,若BD=4CD,△OBD的面积为15,则k的值为_____ .
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/9abb3a62e46296c417261156b51ec6b4.png)
![](https://img.xkw.com/dksih/QBM/editorImg/2023/6/13/c4a16ccf-86ca-4034-917d-1e0a6c4c6ebd.png?resizew=133)
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【推荐2】如图,Rt△BOC的一条直角边
在x轴正半轴上,双曲线
过
的斜边
的中点
,与另一直角边
相交于点
,若
的面积是6,则k的值是_______ .
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f6967ebd791092c62b4ef97924d91883.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/6f98706e07d33611a01ddc698c0b7969.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/8ea7250b555cef87fa1dfd50f8cd1f05.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d62e8aadaadebf1454fde21a390ebdea.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5963abe8f421bd99a2aaa94831a951e9.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/764509115979e9958101808383672ec0.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/8455657dde27aabe6adb7b188e031c11.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b482b1c1a7d8f6e16f3c90850c0b48a9.png)
![](https://img.xkw.com/dksih/QBM/editorImg/2024/3/13/717f9fde-79c0-4a28-af5b-924b1774f2ef.png?resizew=152)
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解题方法
【推荐1】如图,
是四边形
的对角线,
,过点B作
交
于点E,若
,
,
,
,则
的长为______ .
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e1a9c6a736e6eac98a676fa3232db5a5.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5cb3f9a5da641be35117fd35ba07a6aa.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/047dc9795efa99b6fb9fdf9778085dab.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c1c66bac25b3fb79f36f84aab513bd5c.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e1ffb98f1e3c1317c0db403d3af04bdc.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d2b34233772c4c26d6669499d9b1f15a.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/8d3783ed9a7d67f4a30bd76d369555d6.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/348fb71fbc47fd87e9ce011652ef4186.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e1d2231c7a2875ab6d423dff3ead4069.png)
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【推荐2】如图,要测量河两岸相对两点A、B间的距离,先在过点B的AB的垂线上取两点C、D,使CD=BC,再在过点D的垂线上取点E,使A、C、E三点在一条直线上,可证明△EDC≌△ABC,所以测得ED的长就是A、B两点间的距离,这里判定△EDC≌△ABC的理由是__ .
![](https://img.xkw.com/dksih/QBM/2018/9/6/2026644389445632/2031745416568832/STEM/389aec448b1b42e693c55b62709cdcf9.png?resizew=129)
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【推荐1】在平面直角坐标系
中,正方形
的顶点A,B的坐标分别为
,
,点C在点B的右侧,则点C的坐标为______ .(用含m的式子表示)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7ee31829d0d4d5f779a957d7df8058ab.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/411b38a18046fea8e9fab1f9f9b80a5f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/085f6b4425812d3fa3dd9c426cbd6c62.png)
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【推荐2】在正方形ABCD中,AB=8,点P是正方形边上一点,若PD=3AP,则AP的长为_____ .
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