6.1方程的MATLAB表示方法 A*x=b a(1,1)a(1,2)… a(1,n) x(1) b(1) 其中： A= a(2,1)a(2,2)· a(2,n) x(2) b(2) x= b= a(m,1)a(m,2)…a(m,n) x(n) b(m) 等价于「a(1,1)*x(1)+a(1,2)*x(2)+…+a(1,n)*x(n) b(1) a(2,1)*x(1)+a(2,2)*x(2)+…+a(2,n)*x(n) b(2) … … a(m,1)*x(1)+a(m,2)*x(2)+…+a(m,n)*x(n) b(m) 6.1 方程的MATLAB表示方法 其中: 等价于 A x b * = (1,1) (1,2) (1, ) (1) (1) (2,1) (2,2) (2, ) (2) (2) , , ( ,1) ( ,2) ( , ) ( ) ( ) a a a n x b a a a n x b A x b a m a m a m n x n b m             = = =                         (1,1)* (1) (1,2)* (2) (1, )* ( ) (1) (2,1)* (1) (2,2)* (2) (2, )* ( ) (2) ( ,1)* (1) ( ,2)* (2) ( , )* ( ) ( ) a x a x a n x n b a x a x a n x n b a m x a m x a m n x n b m     + + +     + + +     =             + + +