[求助]Matlab报错了

[feng-wuyun]

function Gauss_Matrix(A,b,x0,Nmax,eps)
D=diag(diag(A));
U=-triu(A,1);
L=-tril(A,-1);
G=(D-L)\U;
f=(D-L)\b;
y=G*x0+f;
n=1;
while norm(y-x0)>=eps
x0=y;
y=G*x0+f;
n=n+1;
if n==Nmax
'bushoulian'
return
end
end
y
n
A=[8.714 2.180 5.684;-1.351 10.724 5.684;2.489 -0.459 6.799];
b=[49.91 50.77 32.68];
GaussSeidel(A,b,[0 0 0]',500,0.00001)
??? Error using ==> mldivide
Matrix dimensions must agree.

Error in ==> JacobiMatrix at 6
f=D\b;

[laosam280]

就是矩阵阶数计算的时候不统一

b的左除不对