1. The problem statement, all variables and given/known data Using the definition of linearity to determine whether or not ech case is a linear homegeneous boundary condition: i.) Uxx(0,y)=Ux(0,y)U(0,y) ii.)Uy(x,0)=Ux(5,y) 2. Relevant equations 3. The attempt at a solution I know Uxx(0,y)=Ux(0,y)U(0,y) is not linear because of U(0,y). However, I have no idea for ii.