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r3.5700
x∞ sample—
Periodchaotic
Lyapunov λ—
Regime—
r range[0, 4]
xn+1 = r·xn·(1−xn). Stable fixed point for r<3; 2-cycle at r=3; cascade of doublings accumulates at r≈3.5699 — onset of chaos. Drag a box on the bifurcation diagram to zoom and reveal self-similar Feigenbaum structure. λ>0 means sensitive dependence on initial conditions.