该程序是主要描述的是矩阵运算，包括矩阵的基本运算，矩阵的求逆，矩阵的奇异值分解，以及特征值以及特征向量的求解等等。-The program is the main descr iption of the matrix operations, including the basic matrix operations, matrix inverse, matrix singular value decomposition, and the characteristic value and char