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2014-07-23T14:35:58-03:00
D=
l 1 -2 1 l
l 2 1 -1 l
l -1 3 -2 l=
-2+2+6-(8-3-1)=
6-(4)=
6-4=2

Dx=
l 1 -2 1 l
l 0 1 -1 l
l -3 3 -2 l=
-2-6+0-(0-3-3)=
-8-(-6)=
-8+6=-2
X=-2/2
X=-1

Dy=
l 1 1 1 l
l 2 0 -1 l
l -1 -3 -2 l=
0+1-6-(-4+3+0)=
-5-(-1)=
-5+1=-4
Y=-4/2
Y=-2

Dz=
l 1 -2 1 l
l 2 1 0 l
l -1 3 -3 l=
-3+0+6-(12+0-1)=
3-(11)=
3-11=-8
Z=-8/2
Z=-4
x=-1
y=-2
z=-4
6 4 6