如图,在函数
的图象上取三点A、B、C,由这三点分 别向x轴、y轴作垂线,设矩形AA1OA2、BB1OB2、、CC1OC2 的 面积分别为SA、SB、SC,则下列正确的是( )
![](https://img.xkw.com/dksih/QBM/2018/12/25/2104501303099392/2111593202016256/STEM/df5b5a2f-f8ad-4bf7-86f0-eaf2a40adef7.png?resizew=168)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0f42b2a9736c8943106472a7398d2892.png)
![](https://img.xkw.com/dksih/QBM/2018/12/25/2104501303099392/2111593202016256/STEM/df5b5a2f-f8ad-4bf7-86f0-eaf2a40adef7.png?resizew=168)
A.SA<SB<SC | B.SA>SB>SC | C.SA=SC=SB | D.SA<SC<SB |
更新时间:2019-01-04 18:30:16
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【知识点】 已知比例系数求特殊图形的面积解读
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【推荐1】如图,
,
分别是
轴的负半轴和正半轴上的动点,
,
分别是反比例函数
和
图象上的动点,且四边形
是矩形,则矩形
的面积可表示为( )
![](https://img.xkw.com/dksih/QBM/2022/4/14/2958241553448960/2961637693628416/STEM/f0f577ae-dcbd-4712-9129-cf6e2043d74a.png?resizew=213)
![](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/8455657dde27aabe6adb7b188e031c11.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c5db41a1f31d6baee7c69990811edb9f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/30f35c4af716fb938a5ee6ec906d8d07.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f3addbd533f33ea3e651cc17733131e7.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/411b38a18046fea8e9fab1f9f9b80a5f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/411b38a18046fea8e9fab1f9f9b80a5f.png)
![](https://img.xkw.com/dksih/QBM/2022/4/14/2958241553448960/2961637693628416/STEM/f0f577ae-dcbd-4712-9129-cf6e2043d74a.png?resizew=213)
A.![]() | B.![]() | C.![]() | D.![]() |
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【推荐2】如图,点A在反比例函数
的图象上,点B在反比例函数
的图象上,AB⊥x轴于点M,且AM:MB=1:2,则k的值为( )
![](https://img.xkw.com/dksih/QBM/editorImg/2023/4/12/249d9f20-9d31-4955-8cd6-b87b8798dd78.png?resizew=112)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/8786401efdcf66eb75f8475db3ee8f20.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b87554837b2c371659893f94bbfe1e75.png)
![](https://img.xkw.com/dksih/QBM/editorImg/2023/4/12/249d9f20-9d31-4955-8cd6-b87b8798dd78.png?resizew=112)
A.3 | B.-6 | C.2 | D.6 |
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