Matlab LU分解程序,总是说括号不对称或异常function [l,u]=lu_fenjie(A)n=length(A);u=zeros(n);l=eye(n);u(1,:)=A(1,:);l(2:n,1)=A(2:n,1)/u(1,1);for k=2:nu(k,k:n)=A(k,k:n)-l(k,1:k-1)*u(1:k-1,k:n);l(k+1:n,k)=(A(k+1:n,1:k-1)*u(1:k-1,k))/u(k,k);
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