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unisa_analisi_numerica_2014…/matricesuperiore.m~

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Mathematica

U=[1,2,3:4,5,6;7,8,9];
B=[5;6;7];
x=[];
n= lenght(B);
x(n) = b(n)/U(n,n);
for i=n-1:-1:1
somma = 0;
for k