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ÊýÖµ¼ÆËã¿ÎµÄÀÏʦ¸ø²¼ÖÃÁËÒ»µÀÓÃmatlabÇó½âµÄÌâÄ¿£¬ÓÐÒ»µãÀ§»ó»¹Íû½â´ð ÕâÊÇÎÒÔÚÍøÉÏÕҵĸß˹ÈüµÂ¶ûµü´ú·½·¨µÄÔ´³ÌÐò£º function [x1 k1]=gauss_seidel(A,b,e) n=max(size(A)); for i=1:n if A(i,i)==0 'eig can not be zero' return end end k=0; kend=50; r=1; x=zeros(n,1); while k<=kend && r>e x0=x; for i=1:n s=0; for j=1:i-1 s=s+A(i,j)*x(j); end for j=i+1:n s=s+A(i,j)*x0(j); end x(i)=b(i)/A(i,i)-s/A(i,i); end r=norm(x-x0,inf); k=k+1; end if k>kend 'die dai bu shou lian ,failure' return else 'qiu jie cheng gong' end x1=x; k1=k; ÕâÊÇÎÒÒªÇóµÄÎÊÌ⣺ e=0.000000001; for n=4:12 A=hilb(n); b=A(:,1); [x k]=gauss_seidel(A,b,e) end ΪʲôÔÚÔ´³ÌÐòÖÐÎÒ°Ñx=zeros£¨n£¬1£©¸Ä³Éx=ones£¨n£¬1£©¾Í»á±¨´í£¬´íÎó£º Error in gauss_seidel (line 2) n=max(size(A)); Output argument "x1" (and maybe others) not assigned during call to "gauss_seidel". ·Ç³£À§»ó£¬ÎÒ¿´Ô´³ÌÐòûÓй涨x±ØÐëÈ¡0£¬ÎªÊ²Ã´²»ÄܸÄÄØ£¿ |
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4Â¥2015-10-25 15:55:07
mygt_hit
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2Â¥2015-10-24 12:55:08
lvweizhong
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3Â¥2015-10-24 14:52:09
lvweizhong
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5Â¥2015-10-25 16:01:59













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