A New Four-Scroll Chaotic Attractor Consisted of Two-Scroll Transient Chaotic and Two-Scroll Ultimate Chaotic

Figure 5

Phase portraits of the system (3.5) at (a) 𝑢=−9, (b) 𝑢=−5.11, (c) 𝑢=−1.94, (d) 𝑢=−0.45, (e) 𝑢=0.45, (f) 𝑢=1.94, (g) 𝑢=5.11, (h) 𝑢=9.

(a)

(b)

(c)

(d)

(e)

(f)

(g)

(h)