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# Copyright (C) 2005-2006 Anders Logg. # Licensed under the GNU LGPL Version 2.1. # # First added: 2005 # Last changed: 2006-03-28 # # Poisson's equation in 3D for q = 2 element = FiniteElement("Lagrange", "tetrahedron", 2) v = TestFunction(element) U = TrialFunction(element) f = Function(element) a = v.dx(i)*U.dx(i)*dx L = v*f*dx |