* 高斯列主元素消去法求解矩阵方程AX=B,其中A是N*N的矩阵,B是N*M矩阵

* 输入: n----方阵A的行数

* a----矩阵A

* m----矩阵B的列数

* b----矩阵B

* 输出: det----矩阵A的行列式值

* a----A消元后的上三角矩阵

* b----矩阵方程的解X

-out the main elements of Gaussian elimination method for solving matrix equations AX = B, where A is N * N matrix, B is N * M matrix * Input : n ---- A phalanx of a few-a matrix * A * m-matrix shown in a few B * b ---- Matrix B * output : det-A matrix of a determinant value ---- A * Elimination of upper triangular matrix * b ---- Matrix The X-Solutions