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一张正方形的纸片,剪去两个一样的小矩形得到一个“E”形图案,如图所示,设小矩形的...
一张正方形的纸片,剪去两个一样的小矩形得到一个“E”形图案,如图所示,设小矩形的长、宽分别为x、y,剪去部分的面积为20,若2≤x≤10,记y=f(x),则y=f(x)的图象是( )
![manfen5.com 满分网](http://img.manfen5.com/res/GZSX/web/STSource/20131101231608849060145/SYS201311012316088490601006_ST/images0.png)
A.
![manfen5.com 满分网](http://img.manfen5.com/res/GZSX/web/STSource/20131101231608849060145/SYS201311012316088490601006_ST/images1.png)
B.
![manfen5.com 满分网](http://img.manfen5.com/res/GZSX/web/STSource/20131101231608849060145/SYS201311012316088490601006_ST/images2.png)
C.
![manfen5.com 满分网](http://img.manfen5.com/res/GZSX/web/STSource/20131101231608849060145/SYS201311012316088490601006_ST/images3.png)
D.
![manfen5.com 满分网](http://img.manfen5.com/res/GZSX/web/STSource/20131101231608849060145/SYS201311012316088490601006_ST/images4.png)
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