Fig. 9

(a) Multi-stability analysis (b) Time series analysis of the perturbed system (71) for ρ = 1.5 and τ = 4 and F1 = − 2, F2 = 1 at initial conditions [0.15, − 0.1], [0.1, 0] and [− 0.2, 0.1].

(a) Multi-stability analysis (b) Time series analysis of the perturbed system (71) for ρ = 1.5 and τ = 4 and F1 = − 2, F2 = 1 at initial conditions [0.15, − 0.1], [0.1, 0] and [− 0.2, 0.1].