说明： 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 (The method of elimination of the main elements of the Gaussian column is used to solve the matrix equation AX B, where A is the matrix of N N and B is the row number a matrix of N M matrix input n-square matrix A.)
