New Exact Analytical Solutions for the General KdV Equation with Variable Coefficients

[摘要] In this paper, a general algebraic method based on the generalized Jacobi ellipticfunctionsexpansionmethod,theimprovedgeneralmappingdeformation method and the extended auxiliary function method with computerized symbolic computation is proposed to construct more new exact solutions of a generalized KdV equation with variable coefficients. As a result, eight families of new generalized Jacobi elliptic function wave solutions and Weierstrass elliptic function solutions of the equation are obtained by using this method, some of these solutions are degenerated to soliton-likesolutions,trigonometricfunctionsolutionsinthelimitcaseswhenthe modulus of the Jacobi elliptic functions m → 1 or 0, which shows that the general method is more powerful and will be used in further works to establish more entirely new solutions for other kinds of nonlinear partial differential equations arising in mathematical physics.

[学科分类] 计算数学

[关键词] generalized KdV equation with variable coefficients;general algebraic method;exact solutions;generalized Jacobi elliptic function wave-like solutions