Fig. 5.

Plot of trajectories for –0.99X_2,t, –0.99X̄_2,t, and η_1,t for one realization of (24) and (25) where X_i,0 = X̄_i,0 and ${\eta }_{i,t}={\stackrel{‒}{\eta }}_{i,t}$, i = 1, 2: (a) –0.99 X_2,t 's trajectory for (24). (b) –0.99X̄_2,t 's trajectory for (25)(c) η_1,t 's or ${\stackrel{‒}{\eta }}_{1,t}’\mathrm{s}$ trajectory.