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已知有一根长为10的铁丝,折成了一个矩形框.则这个矩形相邻两边a,b之间函数的图...
已知有一根长为10的铁丝,折成了一个矩形框.则这个矩形相邻两边a,b之间函数的图象大致为( )
A.
![manfen5.com 满分网](http://img.manfen5.com/res/CZSX/web/STSource/20131101190026912576337/SYS201311011900269125763009_ST/images0.png)
B.
![manfen5.com 满分网](http://img.manfen5.com/res/CZSX/web/STSource/20131101190026912576337/SYS201311011900269125763009_ST/images1.png)
C.
![manfen5.com 满分网](http://img.manfen5.com/res/CZSX/web/STSource/20131101190026912576337/SYS201311011900269125763009_ST/images2.png)
D.
![manfen5.com 满分网](http://img.manfen5.com/res/CZSX/web/STSource/20131101190026912576337/SYS201311011900269125763009_ST/images3.png)
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