初等变换法,矩阵求逆用的是笔算时惯用的方法，需要高斯消去法的朋友请参看有关资料。特别提醒：本程序不能用tc2.0编译！详情请参看文件中的说明。 -elementary transformation, matrix inversion using a written calculation method used when the need Gaussian Elimination friends see the information. Reminded : This procedure can not be used tc2.0 compiler! For details, please refer to the documents note.