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若向量=(3,-6),=(4,2),=(-12,-6),则下列结论中错误的是( ...
若向量
![manfen5.com 满分网](http://img.manfen5.com/res/GZSX/web/STSource/20131103101729077964098/SYS201311031017290779640003_ST/0.png)
=(3,-6),
![manfen5.com 满分网](http://img.manfen5.com/res/GZSX/web/STSource/20131103101729077964098/SYS201311031017290779640003_ST/1.png)
=(4,2),
![manfen5.com 满分网](http://img.manfen5.com/res/GZSX/web/STSource/20131103101729077964098/SYS201311031017290779640003_ST/2.png)
=(-12,-6),则下列结论中错误的是( )
A.
![manfen5.com 满分网](http://img.manfen5.com/res/GZSX/web/STSource/20131103101729077964098/SYS201311031017290779640003_ST/3.png)
⊥
![manfen5.com 满分网](http://img.manfen5.com/res/GZSX/web/STSource/20131103101729077964098/SYS201311031017290779640003_ST/4.png)
B.
![manfen5.com 满分网](http://img.manfen5.com/res/GZSX/web/STSource/20131103101729077964098/SYS201311031017290779640003_ST/5.png)
∥
![manfen5.com 满分网](http://img.manfen5.com/res/GZSX/web/STSource/20131103101729077964098/SYS201311031017290779640003_ST/6.png)
C.
![manfen5.com 满分网](http://img.manfen5.com/res/GZSX/web/STSource/20131103101729077964098/SYS201311031017290779640003_ST/7.png)
=
![manfen5.com 满分网](http://img.manfen5.com/res/GZSX/web/STSource/20131103101729077964098/SYS201311031017290779640003_ST/8.png)
-3
![manfen5.com 满分网](http://img.manfen5.com/res/GZSX/web/STSource/20131103101729077964098/SYS201311031017290779640003_ST/9.png)
D.对任一向量
![manfen5.com 满分网](http://img.manfen5.com/res/GZSX/web/STSource/20131103101729077964098/SYS201311031017290779640003_ST/10.png)
,存在实数a,b使
![manfen5.com 满分网](http://img.manfen5.com/res/GZSX/web/STSource/20131103101729077964098/SYS201311031017290779640003_ST/11.png)
=a
![manfen5.com 满分网](http://img.manfen5.com/res/GZSX/web/STSource/20131103101729077964098/SYS201311031017290779640003_ST/12.png)
+b
![manfen5.com 满分网](http://img.manfen5.com/res/GZSX/web/STSource/20131103101729077964098/SYS201311031017290779640003_ST/13.png)
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