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Markus Schmidt 2026-01-06 14:05:44 +01:00
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sheet7/jacobi.template/laplacian.m Normal file
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%% calculate -Laplacian of a function
syms x y c ;
u = x*x*sin(2.5*pi*y)
f = simplify(-laplacian(u,[x,y]))
fsurf(u,[0,1,0,1])
xlabel("x");ylabel("y");