Maple-related stuff
This GIF picture was created from the equation : "(cos^1/3)(t*x)*sin(t*y),x=-3*Pi..Pi, y=-Pi..Pi,t=0.5..1" using the Maple software.
This GIF picture was created from the equation : "u*3/2*t,t,t=0..(8/5)^2*Pi^2, u=-100..100" using the Maple software.