LU分解(LU Decomposition)是矩阵分解的一种，可以将一个矩阵分解为一个单位下三角矩阵和一个上三角矩阵的乘积（有时是它们和一个置换矩阵的乘积）。LU分解主要应用在数值分析中，用来解线性方程、求反矩阵或计算行列式。-LU Decomposition is a matrix of decomposition, a matrix can be decomposed into a unit of the lower triangular matrix and an upper triangular matrix of the product (sometimes they and a replacement matrix of the product). LU decomposition is mainly used in numerical analysis, used to solve the linear equation, seeking inverse matrix or computing determinant.