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| I was trying to a PDE using FEM. The domain is a cube with Dirichlet boundary conditions imposed( 1 for x=1 face while 0 for the remaining faces). I tried to include the inactive operator to the equation as well, and the results were different. ... |
| I was trying to solve a PDE using finite element method. The first trial is successful. op = Inactive[Div][ Inactive[Grad][(u[x, y, z]), {x, y, z}], {x, y, z}] == 0 uif = NDSolveValue[{op, Subscript[\[CapitalGamma], O], ... |