Figure 8

A computer simulation of the system (2.1)–(2.2) with \(a_{1}=0.1450\), \(a_{2}=0.6937\), \(b_{1}=0.0596\), \(b_{2}=0.0206\), \(\alpha _{1}=0.16385\), \(k_{1}=15.64\), \(k_{2}=13.4113\), \(\tau =39\), where \(M(0)=5\), \(M(0)=4.999\), and \(G(0)=0.1\). The solution trajectories will stay close only for a short time, before starting to follow noticeably different paths as time passes