Example 1.3.11
> restart;
> with(linalg):
Warning, new definition for norm
Warning, new definition for trace
> A:=vector(3, [1,2,3]);
> B:=vector(3, [4,5,6]);
> evalm(B-A);
> V:= evalm(A+t*(B-A));
> V[1];
> with(plots):
> a:= spacecurve(V, t=-7..7, thickness=3, axes=FRAME):
> b:= textplot3d({[1,2,3,`(1,2,3)`],[4,5,6,`(4,5,6)`]}):
> display3d(a,b);
>