public double BillinearForm(int i, int j) { return(Mu12(i) * CourantFunction.integrate_dx_dx(i, j, Elements) + Beta(i) * CourantFunction.integrate_dx_fx(i, j, Elements) + Sigma(i) * CourantFunction.integate_fx_fx(i, j, Elements) + Alpha * Fi(1, i) * Fi(1, j)); }
protected double FiDx(int i, double x) { return(CourantFunction.Derivative(x, i, Elements)); }
protected double Fi(double x, int i) { return(CourantFunction.Fi(x, i, Elements)); }