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如图,反比例函数y=-(x>0)图象经过矩形OABC边AB的中点E,交边BC于F...
如图,反比例函数y=-
![manfen5.com 满分网](http://img.manfen5.com/res/CZSX/web/STSource/20131103101249260328797/SYS201311031012492603287002_ST/0.png)
(x>0)图象经过矩形OABC边AB的中点E,交边BC于F点,连接EF、OE、OF,则△OEF的面积是( )
![manfen5.com 满分网](http://img.manfen5.com/res/CZSX/web/STSource/20131103101249260328797/SYS201311031012492603287002_ST/images1.png)
A.
![manfen5.com 满分网](http://img.manfen5.com/res/CZSX/web/STSource/20131103101249260328797/SYS201311031012492603287002_ST/1.png)
B.
![manfen5.com 满分网](http://img.manfen5.com/res/CZSX/web/STSource/20131103101249260328797/SYS201311031012492603287002_ST/2.png)
C.
![manfen5.com 满分网](http://img.manfen5.com/res/CZSX/web/STSource/20131103101249260328797/SYS201311031012492603287002_ST/3.png)
D.
![manfen5.com 满分网](http://img.manfen5.com/res/CZSX/web/STSource/20131103101249260328797/SYS201311031012492603287002_ST/4.png)
考点分析:
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的图象相交于A、B,设点A的坐标为(m,n),那么以m为长,n为宽的矩形的面积和周长分别为( )
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如图,点A在双曲线y=
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上,且OA=4,过A作AC⊥x轴,垂足为C,OA的垂直平分线交OC于B,则△ABC的周长为( )
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C.
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D.
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如图△OAP,△ABQ均是等腰直角三角形,点P,Q在函数y=
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,0)
C.(3,0)
D.(
![manfen5.com 满分网](http://img.manfen5.com/res/CZSX/web/STSource/20131103101249259893641/SYS201311031012492598936029_ST/3.png)
,0)
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![manfen5.com 满分网](http://img.manfen5.com/res/CZSX/web/STSource/20131103101249259893641/SYS201311031012492598936028_ST/0.png)
的交点,则k和n的值分别为( )
A.k=4,n=1
B.k=8,n=4
C.k=4,n=8
D.k=8,n=8
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已知直线y=kx+b与双曲线
![manfen5.com 满分网](http://img.manfen5.com/res/CZSX/web/STSource/20131103101249259893641/SYS201311031012492598936027_ST/0.png)
交于(x
1,y
1)、(x
2,y
2)两点,则x
1x
2的值( )
A.与k有关,与b无关
B.与k无关,与b有关
C.与k、b都无关
D.与k、b都有关
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