1) Summation and Difference of matrixes
矩阵的和与差
2) line sum of a matriX
矩阵的线和
4) Matirx and difference equation
矩阵与差分方程
5) inverse of covariance matrixs
协方差矩阵的逆矩阵
1.
This paper puts forward some methods of finding inverse matrixs and pass to solve inverse of covariance matrixs in order to explain inverse matrixs application in portfolio investment.
本文就不同类型矩阵的逆矩阵,给出了几种常见解法,并通过求协方差矩阵的逆矩阵,来说明逆矩阵在证券投资组合中的应
6) The inverses of GCD and LCM matrices
GCD和LCM幂矩阵的逆矩阵
补充资料：差差
1.犹参差。不齐貌。
说明：补充资料仅用于学习参考，请勿用于其它任何用途。
参考词条