2026-07-072026-07-07http://salesiana.dossiersoluciones.com/handle/123456789/80074A method to construct the exact solution of the PDE is presents, which combines the two kind methods(the nonlinear transformation and RQ(Reduction the PDE to a Quadrature problem) method).The nonlinear diffusion equation is chosen to illustrate the method and the exact solutions are obtained.Chaotic DynamicsExact solutions of nonlinear PDE, nonlinear transformations and reduction nonlinear PDE to a quadraturetext