Figure 3

Trajectories: (a) errors; (b) the unknown parameter estimates of the financial system; (c) the unknown parameter estimates of the Chen-Lee system. \(\left( {p_{{2}} = q_{{2}} = {6}} \right)\).
Trajectories: (a) errors; (b) the unknown parameter estimates of the financial system; (c) the unknown parameter estimates of the Chen-Lee system. \(\left( {p_{{2}} = q_{{2}} = {6}} \right)\).