如图,点
在x轴上,且
,分别过点
作y轴的平行线与反比例函数
(x>0)的图象分别交于点
,分别过点
作x轴的平行线,分别于y轴交于点
,连接
,那么图中从左到右第2022个阴影部分的面积为 _____ .
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/64e25993147b4ace41b81de9e55b70f2.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/bee85a2a3f3ef7bd631b4d7a340fef3f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/64e25993147b4ace41b81de9e55b70f2.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ef854dfcbba9b7dedc1bc52f6332b011.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/88860c103bf8ab8e11c5160584868202.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/88860c103bf8ab8e11c5160584868202.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/26f1dc9c4dbad62ef6503c9b2f2bdfa6.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b00c1a8722f2fc2a33c4c05e23e4d444.png)
![](https://img.xkw.com/dksih/QBM/editorImg/2022/12/12/e05bb4f8-01a4-4735-9396-1a69e2d6f0f1.png?resizew=199)
22-23九年级上·贵州铜仁·期中 查看更多[2]
贵州省铜仁市沿河土家族自治县2022-2023学年九年级上学期期中数学试题(已下线)专题21反比例函数的图象与性质(3个知识点5种题型2种中考考法)-【帮课堂】2023-2024学年九年级数学上册同步学与练(北师大版)
更新时间:2022-12-09 20:24:38
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【推荐1】如图,点
,
在反比例函数
(
,
)的图象上,点
,
在反比例函数
(
,
)的图象上,且
轴,过
,
分别作
轴的垂线,垂足为
,
,
交
于点
,连结
交
于点
.若
,则![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4d8972f0abf05f49fe75ef244192224e.png)
______ .
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5963abe8f421bd99a2aaa94831a951e9.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7f9e8449aad35c5d840a3395ea86df6d.png)
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![](https://staticzujuan.xkw.com/quesimg/Upload/formula/94440d3e4c073f94f2b266ff99d50e74.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/08115d6d9f876dea921a4d32260ff1fb.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c5db41a1f31d6baee7c69990811edb9f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/8455657dde27aabe6adb7b188e031c11.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/42408def74fe65cc8f2b41428df0cc46.png)
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【推荐2】如图,
,
分别是反比例函数
和
在第四象限内的图像,点
在
上,线段
交
于点A,作
轴于点C,交
于点B,延长OB交
于点M,作
轴于点F,下列结论:
①
;
②
与
是位似图形,面积比为
;
③
;
④
.
其中正确的是____________ .
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2e9b0f5f44abbc6544a2f672b025b013.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/3f6f17bc385bafb37e8f964e5eb99cd0.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/6133936dd102126fd7cfedccf232b444.png)
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![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2e9b0f5f44abbc6544a2f672b025b013.png)
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![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2e9b0f5f44abbc6544a2f672b025b013.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/8f7e98fa4da2def9eebd11a349b83e87.png)
①
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c4139c9e334b67f26c796901b02e6f01.png)
②
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ebb49c1fd097c5aafc0c9080449f5fc5.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a8c3b743769d19231c2165ec275bab1b.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/cbca618481728e8214db1149bc2994d7.png)
③
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/3c72045457a688631a542c1c94f1c70a.png)
④
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/12ef39bb3774086629c4f9285be0566c.png)
其中正确的是
![](https://img.xkw.com/dksih/QBM/editorImg/2023/2/10/7ef8bedf-6d9f-4401-b7e9-df8fe198517a.png?resizew=189)
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【推荐1】如图1是护眼学习台灯,该台灯的活动示意图如图2所示,灯柱
,灯臂
绕着支点
可以旋转,灯罩呈圆弧形(即
和
),在转动过程中,
总是与桌面
平行.当
时,
,
,测得
,点
在墙壁
上,且
;当灯臂
转到
位置时,
,测得
,则点
到桌面
的距离为_____
.若此时点
,
,
在同一条直线上,
的最低点到桌面
的距离为
,则
所在圆的半径为_____
.
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【推荐2】如图,折叠矩形纸片ABCD,
,
,具体操作:①点E为AD边上一点(不与点A,D重合).把
沿BE所在的直线折叠,A点的对称点为F点;②过点E对折∠DEF,折痕EG所在的直线交DC于点G,D点的对称点为H点.
![](https://img.xkw.com/dksih/QBM/editorImg/2022/9/14/7d29130a-c59b-403e-bc36-77be2676c5d1.png?resizew=452)
(1)如图1,若
,则DG的长是______ .
(2)如图2,若点C恰在射线EF上,连接DH,则线段DH的长是______ .
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/305a88d4e0249bd16d48eda01331d2d4.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/57ebb33adb2310a6e03918761e68204a.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e742966e3711cfa53dce04022acf4bcc.png)
![](https://img.xkw.com/dksih/QBM/editorImg/2022/9/14/7d29130a-c59b-403e-bc36-77be2676c5d1.png?resizew=452)
(1)如图1,若
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/070bc896d35495237fd65576e9b6f88e.png)
(2)如图2,若点C恰在射线EF上,连接DH,则线段DH的长是
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