Exp-Function Method for a Generalized MKdV Equation

Figure 4

Evolution of the solutions of (25). (a) Dark soliton: parameters are 𝛼=1, 𝛽=−1, 𝑎₁=−5, 𝑏₀=2, and 𝑘=−3. (b) Two-peak dark soliton: parameters are 𝛼=1, 𝛽=−1, 𝑎₁=−5, 𝑏₀=3, and 𝑘=4.

(a)

(b)