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O是平面α上一点,A、B、C是平面α上不共线三点,平面α内的动点P满足,若时,的...
O是平面α上一点,A、B、C是平面α上不共线三点,平面α内的动点P满足
![manfen5.com 满分网](http://img.manfen5.com/res/GZSX/web/STSource/20131024180248775601371/SYS201310241802487756013015_ST/0.png)
,若
![manfen5.com 满分网](http://img.manfen5.com/res/GZSX/web/STSource/20131024180248775601371/SYS201310241802487756013015_ST/1.png)
时,
![manfen5.com 满分网](http://img.manfen5.com/res/GZSX/web/STSource/20131024180248775601371/SYS201310241802487756013015_ST/2.png)
的值为
.
考点分析:
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