Figure 2From: Soliton solutions to the time-dependent coupled KdV–Burgers’ equationSmooth soliton solution (left) and breather soliton solution (right) given by equation (3.26) with \(K_{3} = - 1\), \(A = B = 1\), \(a_{2} = c_{0} = \lambda _{4} = 1\), and \(\tau _{1} ( t ) = \cos (t) + \sin (t)\)Back to article page