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Abstract.The Exp-function method or some similar direct methods have been applied by many researchers to the construction of "new" solutions to nonlinear differential equations. In this paper, we demonstrate that some of those so-called "new" solutions can always be transformed into a uniform formula, which can be obtained by a very simple integral in fact. Consequently, we have reasons to believe that it should take more careful checking of computations if "different" solutions generated by using the Exp-function method and some similar direct methods are really different from the known ones.
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