Individual point coloring in Geogebra 5 with trace method
Implicit functions:
cos(x π / 5) (cos(y π / 20) cos(3z π / 20) + cos(3y π / 20) cos(z π / 20)) +
cos(x π / 20) (cos(3y π / 20) cos(z π / 5) + cos(y π / 5) cos(3z π / 20)) +
cos(3x π / 20) (cos(y π / 5) cos(z π / 20) + cos(y π / 20) cos(z π / 5))=0
-3D standing waves ( spatial "Chladni figures")
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