在平面直角坐标系内,如图,矩形
的点A,B在
轴正半轴上, E是
的中点,F是
边上一点,反比例函数
经过点E.若
,则
的值为( )
![](https://img.xkw.com/dksih/QBM/2023/1/5/3146193690779648/3153371856863232/STEM/485feda0bfbe4f8a87707db3ff36e02a.png?resizew=147)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/411b38a18046fea8e9fab1f9f9b80a5f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/81dea63b8ce3e51adf66cf7b9982a248.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0dc5c9827dfd0be5a9c85962d6ccbfb1.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/03902478df1a55bc99703210bccab910.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/07854693dd2e33f66030d6106eb6e0ee.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/accc262c50b40ebc3e4584c5837b071f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f0a532e15e232cb4b99a8d4d07c89575.png)
![](https://img.xkw.com/dksih/QBM/2023/1/5/3146193690779648/3153371856863232/STEM/485feda0bfbe4f8a87707db3ff36e02a.png?resizew=147)
A.![]() | B.7 |
C.12 | D.28 |
更新时间:2023-01-15 15:34:22
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【推荐1】如图所示,已知:
(x>0)图象上一点P,PA⊥x轴于点A(a,0),点B坐标为(0,b)(b>0).动点M在y轴上,且在B点上方,动点N在射线AP上,过点B作AB的垂线,交射线AP于点D,交直线MN于点Q,连接AQ,取AQ的中点为C.若四边形BQNC是菱形,面积为2
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![](https://img.xkw.com/dksih/QBM/2018/12/24/2103542247686144/2107444355817472/STEM/561c05429de141c3ba597f89fe99ee40.png?resizew=151)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a6dcd6795f85211f1f201eefc64bb293.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a7ffe8515ff6183c1c7775dc6f94bdb8.png)
![](https://img.xkw.com/dksih/QBM/2018/12/24/2103542247686144/2107444355817472/STEM/561c05429de141c3ba597f89fe99ee40.png?resizew=151)
A.(3,2) | B.(![]() ![]() | C.(![]() | D.(![]() ![]() |
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【推荐2】如图,在x轴正半轴上依次截取OA1=A1A2=A2A3=…=An-1An(n为正整数),过点A1、A2、A3、…、An分别作x轴的垂线,与反比例函数y=
(x>0)交于点P1、P2、P3、…、Pn,连接P1P2、P2P3、…、Pn-1Pn,过点P2、P3、…、Pn分别向P1A1、P2A2、…、Pn-1An-1作垂线段,构成的一系列直角三角形(见图中阴影部分)的面积和是( )
![](https://img.xkw.com/dksih/QBM/2016/7/18/1578925499867136/1578925500104704/STEM/ab1cc45a1a5a4d98801326c2357cda61.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4c943d7b6ce65c70e98d62e3664168ab.png)
![](https://img.xkw.com/dksih/QBM/2016/7/18/1578925499867136/1578925500104704/STEM/ab1cc45a1a5a4d98801326c2357cda61.png)
A.![]() | B.![]() | C.![]() | D.![]() |
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【推荐1】如图,
是四根长度均为
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,则点C和点E之间的距离是( )
![](https://img.xkw.com/dksih/QBM/editorImg/2024/3/23/517f60b4-52f8-4ff3-b482-0b272c3635b0.png?resizew=241)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/85450ee4680efd113f3c7b9c05f00f5a.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/cdb26c5cdef6f16f4b39cd091041b439.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b1a6d283d151d1f65f35f5b3607ccfdc.png)
![](https://img.xkw.com/dksih/QBM/editorImg/2024/3/23/517f60b4-52f8-4ff3-b482-0b272c3635b0.png?resizew=241)
A.![]() | B.![]() | C.![]() | D.![]() |
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【推荐2】如图,在平面直角坐标系中,矩形ABCD的顶点A、B分别在y轴、x轴上,连接对角线AC,AC∥x轴,点F为AD边的中点,点G在对角线AC上,已知点F、G均在反比例函数y=
(k>0,x>0)的图象上,OB:AG=1:3,S△ABF=10,则k的值为( )
![](https://img.xkw.com/dksih/QBM/editorImg/2022/11/10/e53d78d2-9702-443f-b980-a4b106119e59.png?resizew=188)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/9abb3a62e46296c417261156b51ec6b4.png)
![](https://img.xkw.com/dksih/QBM/editorImg/2022/11/10/e53d78d2-9702-443f-b980-a4b106119e59.png?resizew=188)
A.20 | B.![]() | C.24 | D.![]() |
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