>	with(plots):Path1:=spacecurve([2*t,2*t,0,t=0..1],thickness=3,color=blue,axes=normal,labels=[x,y,z]):

>	Path2:=spacecurve([2,2+2*t,4*t^2,t=0..1],thickness=3,color=blue,axes=normal,labels=[x,y,z]):

>	Path3:=spacecurve([2-2*t,4-4*t,4-4*t,t=0..1],thickness=3,color=blue,axes=normal,labels=[x,y,z]):

>	display(Path1,Path2,Path3);

>