设i、j分别是平面直角坐示系Ox,Oy正方向上的单位向量,且
![manfen5.com 满分网](http://img.manfen5.com/res/GZSX/web/STSource/20131025123743429527294/SYS201310251237434295272009_ST/0.png)
=-2i+mj,
![manfen5.com 满分网](http://img.manfen5.com/res/GZSX/web/STSource/20131025123743429527294/SYS201310251237434295272009_ST/1.png)
=ni+j,
![manfen5.com 满分网](http://img.manfen5.com/res/GZSX/web/STSource/20131025123743429527294/SYS201310251237434295272009_ST/2.png)
=5i-j,若点A、B、C在同一条直线上,且m=2n,求实数m、n的值.
考点分析:
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![manfen5.com 满分网](http://img.manfen5.com/res/GZSX/web/STSource/20131025123743429527294/SYS201310251237434295272005_ST/0.png)
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![manfen5.com 满分网](http://img.manfen5.com/res/GZSX/web/STSource/20131025123743429527294/SYS201310251237434295272005_ST/3.png)
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![manfen5.com 满分网](http://img.manfen5.com/res/GZSX/web/STSource/20131025123743429527294/SYS201310251237434295272005_ST/4.png)
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