I have multiple questions of that kind, the first one was Describe the line from point A(1,2,3)
to point B(2,-1,1)
My answer is : V = OA + OB
, right ?
Should I do something like V = x1A+x1B
, AB = (1+2,2-1,3+1)
, AB = (3,1,4)
?
Then I have to describe the parallelogram at the origin $A(1,2,3)$ made the 2 vectors $[2,-1,1] and [1,1,1]$
I ended up with $X = Ov1 + Ov2 , so X = (1,2,3)[2,-1,1] , (1,2,3)[1,1,1]$
Then I'll have to describe the form that use four points $A(1,2,3), B(-1,2,0) C(1,0,1) D(0,1,1)$
Yeah... I'm confuse.