"alonsovg" wrote in message <email@example.com>... > Hello, > > I have some troubles when trying to solve for a second order PDE. Would be wonderful if you can help me. > > The PDE I want to solve is the following: > > uxx + (2*y^2)*uyy + (1+0.3*x*ux+0.5*(2-y)*uy) = 0.3*u > > defined for x>=0 and y>=0 > > and with boundaries: u(0,y)=0 and ux(y,y)=-1 > > ( where u denotes the function to solve for u(x,y); ux is the first derivative with respect to x, uy the partial wrt to y, and uxx denote second derivatives). > > My first trouble is with the boundary condition: I am using the pde tool, and I don't see how can I implement this boundary condition in the options of Neumann or Dirichlet available. > > Thank you!