David Underhill – P710 #21M, 23M
> with(plots):
Warning, the name changecoords has been redefined
> spacecurve( [sin(t), cos(t), t^2], t=-2*Pi..2*Pi, color=blue, axes=normal); #P710 #21M
> spacecurve( [t^2, (t-1)^.5, (5-t)^.5], t=-2*Pi..2*Pi, color=blue, axes=normal); #P710 #23M