jacobi.m

GAUSS-SEIDEL法的Matlab程序

function s=jacobi(a,b,x0,eps)
D=diag(diag(a));%求对角矩阵
D=inv(D);%求对角矩阵的逆
L=tril(a,-1);%求严格下三角矩阵
U=triu(a,1);%求严格上三角矩阵
B=-D*(L+U);
f=D*b;
s=B*x0+f;
while norm(s-x0)>=eps
    x0=s;
    s=B*x0+f;
end
return