jiefangchengzu.m

快速解方程组

%求解方程组      3x1 +   x2  -   x3  =   3.6
                              % x1 + 2x2 + 4x3  =   2.1
                              %-x1 + 4x2 + 5x3  =  -1.4
                  >> A = [ 3 1 -1 ; 1 2 4 ; -1 4 5 ];  
                  >> B = [ 3.6 ; 2.1 ; -1.4 ];
                  >> x = A\B