Figure 4

Stable case of (1.2) with \(\xi _{1}=0.1414\), \(\xi _{2}=0.1414\), \(\xi _{3}=0.2\). Theorem 3.1 shows that \(\lim_{t\rightarrow \infty }\langle N_{1}(t)\rangle = \frac{A_{1}-\tilde{A}_{1}}{A}=0.5581\), \(\lim_{t\rightarrow \infty }\langle N_{2}(t)\rangle =\frac{A_{2}-\tilde{A}_{2}}{A}=0.4124\), \(\lim_{t\rightarrow \infty }\langle N_{3}(t)\rangle = \frac{A_{3}-\tilde{A}_{3}}{A}=0.2372\)