Figure 3

Bifurcation diagrams, maximum Lyapunov exponent, and phase portraits for system ( 3 ). (a) Bifurcation diagram in \((d,x)\) plane for \(a=3.6\) and \(c=0.2\). (b) Maximum Lyapunov exponents corresponding to (a). (c) Bifurcation diagram in \((d,y)\) plane for \(a=3.6\) and \(c=0.2\). (d)-(f) Phase portraits for various values of d: (d) \(d= 1.0\), (e) \(d= 1.9\), and (f) \(d= 3.7\).