printf("C的逆:\n"); MatInv(C, 3, 3); //矩阵代数余子式 printf("C的(0,0)元素的代数余子式:\n"); printf("%16lf\n", MatACof(C, 3, 0, 0)); //矩阵伴随矩阵 printf("A的伴随矩阵:\n"); Adj = MatAdj(A, 3, 3); MatShow(Adj, 3, 3); //蒋方正矩阵库应用:多元线性回归 /...