矩阵的逆与线性方程组的解 a1x1+a12x2+…+a1mxn=b1】 azx+axx2+..+azn b2 ( an1x1十an2X2+…十AnnXn= bn】 d11 d12 d21 d22 d2n b2 : g anl dn2 ann Xn or,equivalently,letting A=(ai),x =(xi),and b =(bi),as Ax =b. If A is nonsingular,it possesses an inverse A-,and x=A-b矩阵的逆与线性方程组的解