The First Integrals of a Second Order Ordinary Differential Equation and Application
Yanxia Hu *
School of Mathematics and Physics, North China Electric Power University, Beijing, 102206 China.
Xiaofei Du
School of Mathematics and Physics, North China Electric Power University, Beijing, 102206 China.
*Author to whom correspondence should be addressed.
Abstract
The first integrals of second order ordinary differential equations are considered. The necessary conditions of the existence of analytical first integrals for the equation are presented. Then, the first integrals of the equation are obtained using Lie symmetry method. The results of the first integrals are applied to certain classes of partial differential equations, the conditions of nonexistence of the traveling wave solutions of the partial differential equations are obtained, and traveling wave solutions of the equations under the certain parametric conditions are also obtained.
Keywords: First integral, lie symmetry, traveling wave solutions, partial differential equations.