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如图,正方形ABCD的顶点A(0,),B(,0),顶点C,D位于第一象限,直线y...
如图,正方形ABCD的顶点A(0,
![manfen5.com 满分网](http://img.manfen5.com/res/CZSX/web/STSource/20131101193851289542544/SYS201311011938512895425011_ST/0.png)
),B(
![manfen5.com 满分网](http://img.manfen5.com/res/CZSX/web/STSource/20131101193851289542544/SYS201311011938512895425011_ST/1.png)
,0),顶点C,D位于第一象限,直线y=t,(0≤t≤
![manfen5.com 满分网](http://img.manfen5.com/res/CZSX/web/STSource/20131101193851289542544/SYS201311011938512895425011_ST/2.png)
),将正方形ABCD分成两部分,设位于直线Y左侧部分(阴影部分)的面积为S,则函数Y=S的图象大致是( )
![manfen5.com 满分网](http://img.manfen5.com/res/CZSX/web/STSource/20131101193851289542544/SYS201311011938512895425011_ST/images3.png)
A.
![manfen5.com 满分网](http://img.manfen5.com/res/CZSX/web/STSource/20131101193851289542544/SYS201311011938512895425011_ST/images4.png)
B.
![manfen5.com 满分网](http://img.manfen5.com/res/CZSX/web/STSource/20131101193851289542544/SYS201311011938512895425011_ST/images5.png)
C.
![manfen5.com 满分网](http://img.manfen5.com/res/CZSX/web/STSource/20131101193851289542544/SYS201311011938512895425011_ST/images6.png)
D.
![manfen5.com 满分网](http://img.manfen5.com/res/CZSX/web/STSource/20131101193851289542544/SYS201311011938512895425011_ST/images7.png)
考点分析:
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