一些矩阵运算的函数，包括两个矩阵相加，两个矩阵相减，两个矩阵相乘，矩阵复制，矩阵求逆的全选主员高斯-约当法，矩阵的三角分解(LU分解)，求Hessenberg矩阵全部特征根的QR法，约化一般实矩阵为Hessenberg矩阵的初等相似变换-A function of a number of matrix operations, including the sum of two matrices, subtract two matrices, the two matrices, matrix duplicate, matrix inversion Select All the main members of the Gaussian- about when the law, the triangular matrix decomposition (LU decomposition ), seeking Hessenberg eigenvalue matrix of all the QR method, some of the general real matrix to Hessenberg Matrix elementary similarity transformation