如图,在平面直角坐标系xOy中,点A在y轴上,∠OAB=30°,B(2,0),OC⊥AB于点C,点C在反比例函数y=
(k≠0)的图象上.
![](https://img.xkw.com/dksih/QBM/2020/1/17/2378842943840256/2379935141748736/STEM/7819f6b84b1f4b26b539a6e56e07625f.png?resizew=187)
(1)求该反比例函数解析式;
(2)若点D为反比例函数y=
(k≠0)在第一象限的图象上一点,且∠DOC=30°,求点D的坐标.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/9abb3a62e46296c417261156b51ec6b4.png)
![](https://img.xkw.com/dksih/QBM/2020/1/17/2378842943840256/2379935141748736/STEM/7819f6b84b1f4b26b539a6e56e07625f.png?resizew=187)
(1)求该反比例函数解析式;
(2)若点D为反比例函数y=
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/9abb3a62e46296c417261156b51ec6b4.png)
更新时间:2020-01-18 21:33:21
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适中
(0.65)
【推荐1】如图,矩形
的两边
,
的长分别为3,8,且
,
在
轴的负半轴上,
是
的中点,反比例函数
的图象经过点
,与
交于点
.
![](https://img.xkw.com/dksih/QBM/editorImg/2022/9/24/54e9c9ca-ca47-489a-8eb0-23270e6f66dd.png?resizew=237)
(1)若点
坐标为(-6,0),求
的值;
(2)若
,且点
的横坐标为
.
①用含
的代数式表示出点
的坐标;
②求出反比例函数的表达式.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/411b38a18046fea8e9fab1f9f9b80a5f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/03902478df1a55bc99703210bccab910.png)
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![](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/81dea63b8ce3e51adf66cf7b9982a248.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2a30f3a8b673cc28bd90c50cf1a35281.png)
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![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f52a58fbaf4fea03567e88a9f0f6e37e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a0ed1ec316bc54c37c4286c208f55667.png)
![](https://img.xkw.com/dksih/QBM/editorImg/2022/9/24/54e9c9ca-ca47-489a-8eb0-23270e6f66dd.png?resizew=237)
(1)若点
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7f9e8449aad35c5d840a3395ea86df6d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/294f5ba74cdf695fc9a8a8e52f421328.png)
(2)若
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/319cd013e2b0be94b9bd2286f7bb641c.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2a30f3a8b673cc28bd90c50cf1a35281.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0a6936d370d6a238a608ca56f87198de.png)
①用含
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0a6936d370d6a238a608ca56f87198de.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a0ed1ec316bc54c37c4286c208f55667.png)
②求出反比例函数的表达式.
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适中
(0.65)
【推荐2】如图,一次函数
的图象与反比例函数
的图象相交于点
与
轴负半轴交于点
.
(2)连接
,求
的面积.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c15fb18163df0690365a0d2e7ee88f5a.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/05621b18b7ffc991d9f30380e2e08fea.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/33e86bf730e2ab6b54a41f7dd78775fe.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d053b14c8588eee2acbbe44fc37a6886.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d88c0ceb160e5bf25e81a1f958c2aa1d.png)
(2)连接
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ef4113c492885ba7c47fe42ac792578f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/866b81a8384cce4f24867baca2e6820c.png)
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【推荐1】如图,△ABC 为等边三角形,D、E 分别是边 AC、BC 上的点,且AD=CE,AE 与 BD 相交于点 P.
(1)求∠BPE 的度数;
(2)若 BF⊥AE 于点 F,试判断 BP 与 PF 的数量关系并说明理由.
(1)求∠BPE 的度数;
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![](https://img.xkw.com/dksih/QBM/editorImg/2022/7/21/d0f972a0-42f9-4982-847b-3e96eae667c0.png?resizew=154)
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解答题-证明题
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适中
(0.65)
【推荐2】如图,
是
的直径,点A是
上一点,
,
于B,分别连接
.
(1)求证:
是
的切线;
(2)作
平分
交
于点D,连接
.若
,
,请补全图形,并求
的长.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0dc5c9827dfd0be5a9c85962d6ccbfb1.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/3d97cdc586744d208b6f69c9813af977.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/3d97cdc586744d208b6f69c9813af977.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/3aa6dff1beaa6f6b8fdcb4ba496bac3b.png)
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![](https://img.xkw.com/dksih/QBM/editorImg/2023/11/9/2f64ece7-ce86-4d73-8212-7a864144390b.png?resizew=141)
(1)求证:
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/20a541b81584a032f571159ea152c85a.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/3d97cdc586744d208b6f69c9813af977.png)
(2)作
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