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yan0415

木虫 (正式写手)

[求助] 线性方程组列主元高斯消去法的程序出错求助

线性方程组列主元高斯消去法的程序如下:
function x=nagauss2(a,b,f)
n=length(b);
c=[a,b];
if f==1
    disp('交换次序');
end
for k=1:n-1
    [ap,p]=max(abs(c(k:n,k)));
    p=p+k-1;
    if p>k
        t=c(k,;
        c(k,=c(p,;
        c(p,=t;
    end
  c((k+1):n,(k+1)n+1))=c((k+1):n,(k+1)n+1))-c((k+1):n,k)/c(k,k)*c(k,(k+1)n+1));
    c((k+1:n,k)=zeros(n-k,1);
    if f==1
        c
    end
end
x=zeros(n,1);
x(n)=c(n,(n+1))/c(n,n);
for k=n-1:-1:1
    x(k)=(c(k,n+1)-c(k,(k+1):n):n)*x(k+1:n))/c(k,k);
end
disp('解向量');x
disp('矩阵行列式');det(a)
但metlab提示黑体处有错:??? Error: File: D:\work\nagauss2.m Line: 16 Column: 13Incomplete or misformed expression or statement.
不知怎么错的,求帮忙解决。谢谢
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zhywu

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【答案】应助回帖

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yan0415: 金币+5 2012-12-06 18:06:28
c((k+1:n,k)多了一个括号(
2楼2012-12-06 13:08:19
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