Figure 2From: Attracting and invariant sets of nonlinear neutral differential equations with delays The state trajectory of x 1 (t) , x 2 (t) of the model ( 27 ) with J 1 =0 , J 2 =0 and initial conditions ϕ 1 (s)=4+4sin 2 3 πs , ϕ 2 (s)=3+2|cos 2 3 πs| , s∈[−1,0] . Back to article page