Nonlinear Sciences – Exactly Solvable and Integrable Systems
Scientific paper
2010-11-16
Nonlinear Sciences
Exactly Solvable and Integrable Systems
5 pages
Scientific paper
We discuss the recent paper by Inan and Ugurlu [Inan I.E., Ugurlu Y., Exp-function method for the exact solutions of fifth order KdV equation and modified Burgers equation, Appl. Math. Comp. 217 (2010) 1294 -- 1299]. We demonstrate that all exact solutions of fifth order KdV equation and modified Burgers equation by Inan and Ugurlu are trivial solutions that are reduced to constants. Moreover, we show exact solutions of the fifth -- order equation studied by Inan and Ugurlu cannot be found by the Exp-function method.
Kudryashov Nikolay A.
Sinelshchikov Dmitry I.
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