Respostas

2013-12-08T18:49:11-02:00
U.v= 6
(a,-a,a) . (2,2,3)=6
2a -2a+3a=6
3a=6
a=2
2013-12-08T18:51:41-02:00
2*a+(2*-a)+3*a=6
2a-2a+3a=6
a=6/3
a=2