PP
pp-0.com/lab
Mathieu–Duffing
a=0.5
a
0.50
SPEED (dt)
0.02
FADE
0.08
PRESETS
Mathieu–Duffing — ẋ=y, ẏ=−(1+a cos z)x−0.2 y−0.5 x³, ż=1. Classic a=0.5. Phase-wrap z. Distinct from duffing-holmes.html. RK4. Gold trail, cap 650. RM = settled silhouette, no animate-on.
PTS 0 · a 0.50
DT 0.02
MODE CLASSIC · ZOOM 1.40
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