︠09932d4f-14a3-47da-a64f-e4b5688575eds︠ x,y,t = var('x,y,t') f = lambda x,y: x*abs(y)/sqrt(x^2+y^2) if (x,y)<>(0,0) else 0 a,b = 1,6 e = 0.1 parametric_plot3d( [b*t, -a*t, f(b*t,-a*t)], [t,-e,e], color="yellow", size=15, plot_points=200 ) ︡ec89e099-30bb-413f-a089-2d3350d19a1a︡︡{"done":false,"file":{"uuid":"62ffd08b-7d0e-41bb-9530-fc4fbc7b3dc3","filename":"62ffd08b-7d0e-41bb-9530-fc4fbc7b3dc3.sage3d"}}︡{"html":"
","done":false}︡{"done":true} ︠b48e188d-ea8d-4e20-9430-d0902024a3ac︠