Parameters Estimation and Stability Analysis of Nonlinear Fractional-Order Economic System Based on Empirical Data

Figure 4

Space trajectory and the time responses of the estimated system about US.

(a) Space trajectories

(b) 𝑥(𝑡) versus time

(c) 𝑦(𝑡) versus time

(d) 𝑧(𝑡) versus time