Chaos in Essentially Singular 3D Dynamical Systems with Two Quadratic Nonlinearities

Figure 4

The graphs (a, b) of the function ; the graphs (c, d) of the function ; and the phase portraits (e, f) of system (19) at , , , , , and and different values of the parameters .

(a)

(b) ,

(c)

(d) ,

(e) ,

(f) ,