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The cosine-function method and the modified extended tanh method to generalized Zakharov system

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Abstract (2. Language): 
The cosine-function method and the modified extended tanh method are efficient methods for obtaining exact soliton solutions of nonlinear partial differential equations. These methods can be applied to nonin- tegrable equations as well as to integrable ones. In this paper, we look for exact soliton solutions of generalized Zakharov equation.
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