function [ output_args ] = Gausspp( input_args )%UNTITLED1 Summary of this function goes here%   Detailed explanation goes hereA=[3   -5    6   4    -2    -3     8   1    1   -9   15    1    -9     2   2   -1    7    5    -1    6    11   -1   1    3    2     7    -1    -2    4   3   1    -7     2     1     1    2   9   -8    11    -1    -4   -1    7   2   -1     2     7    -1   9];b=[11;2;29;9;5;8;25];for i=1:6    for k=i:6        if abs(A(k,i))>=abs(A(k+1,i))            a=A(k,:);            A(k,:)=A(k+1,:);            A(k+1,:)=a;                   c=b(k);            b(k)=b(k+1);            b(k+1)=c;                    end     end    d=A(k+1,:);    A(k+1,:)=A(i,:);    A(i,:)=d;    e=b(k+1);    b(k+1)=b(i);    b(i)=e;        for j=i+1:7        b(j)=b(j)-b(i)*(A(j,i)/A(i,i));        A(j,:)=A(j,:)-(A(j,i)/A(i,i))*A(i,:);       endendx(7)=b(7)/A(7,7);c=0;for m=6:-1:1    c=c+A(m,m+1)*x(m+1);    x(m)=(b(m)-c)/A(m,m);end    x