已知向量
![manfen5.com 满分网](http://img.manfen5.com/res/GZSX/web/STSource/20131101230148687297128/SYS201311012301486872971011_ST/0.png)
=(2,3),
![manfen5.com 满分网](http://img.manfen5.com/res/GZSX/web/STSource/20131101230148687297128/SYS201311012301486872971011_ST/1.png)
=(-1,2),若
![manfen5.com 满分网](http://img.manfen5.com/res/GZSX/web/STSource/20131101230148687297128/SYS201311012301486872971011_ST/2.png)
与
![manfen5.com 满分网](http://img.manfen5.com/res/GZSX/web/STSource/20131101230148687297128/SYS201311012301486872971011_ST/3.png)
共线,则
![manfen5.com 满分网](http://img.manfen5.com/res/GZSX/web/STSource/20131101230148687297128/SYS201311012301486872971011_ST/4.png)
=
.
考点分析:
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