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![](/common/images/spacer.gif) By the application of the extended tanh method and the symbolic computation system-Mathematica, new soliton-like solutions are obtained for the 2D KdV equation with variable coefficients, under a constraint condition. In addition, new soliton-like solutions for the generalized Kadomtsev–Petviashvili equation are obtained in case of degeneracy of the 2D KdV equation.
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