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林书豪身高1.91m,在某次投篮中,球的运动路线是抛物线y=x2+3.5的一部分...
林书豪身高1.91m,在某次投篮中,球的运动路线是抛物线y=
![manfen5.com 满分网](http://img.manfen5.com/res/CZSX/web/STSource/20131022164851026705425/SYS201310221648510267054008_ST/0.png)
x
2+3.5的一部分(如图),若命中篮圈中心,则他与篮底的距离约为( )
![manfen5.com 满分网](http://img.manfen5.com/res/CZSX/web/STSource/20131022164851026705425/SYS201310221648510267054008_ST/images1.png)
A.3.2m
B.4m
C.4.5m
D.4.6m
考点分析:
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![manfen5.com 满分网](http://img.manfen5.com/res/CZSX/web/STSource/20131022164851026705425/SYS201310221648510267054005_ST/0.png)
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