xxxxxxxxxxvar('u,v')x=(2+cos(v/2)*sin(u)-sin(v/2)*sin(4*u))*cos(v)y=(2+cos(v/2)*sin(u)-sin(v/2)*sin(4*u))*sin(v)z=30*abs(sin(v/2)*sin(u)+cos(v/2)*sin(4*u))sum([parametric_plot3d( [2*i*x,2*i*y,z],(u,0,2*pi),(v,0,2*pi), opacity=.7,mesh=True,frame=False,color='#ff3636') for i in [1..3]])
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