Lobo, J.Z.; Valaulikar, Y.S.
(Proc. of Int. Conf. on Applied Mathematics & Computational Sciences (ICAMCS-2019), Ed. by: Jogendra Kumar, Seema Yadav, Fateh Singh. 2020; 133-141.)
In this paper we obtain the Lie invariance condition for second order partial differential equations. This condition is used to obtain the determining equations of the 1-dimensional wave equation with constant speed. The ...