4132.sagews

t = var('t')
p = parametric_plot3d((t, (t^2), (t^3)), (t,-10,10), mesh=true)
show(p)

t = var('t')
a = 1
b = 9
p = parametric_plot3d((a*cos(t), a*sin(t), b*t), (t,-10,10), mesh=true)
show(p)