摘要
用对角矩阵及相似矩阵性质证明了；当状态转移矩阵ｅ￣（Ａｔ）中方阵Ａ的特征根相异时，拉格朗日插值公式与Ｌａｐｌａｃｅ变换法对ｅ￣（ｅｔ）表达具有一致性，并用极限方法对方阵Ａ含二重根时拉格朗日插值公式的应用进行了报导．
The comparison between the method of Laplace Transform and that of Lagrange＇s interpolationformula in square matrix form is made， Also the form of Lagrange＇s interpolation formula isgeneralized to include the double root case. The application of the generalized Lagrange＇ s interpolationformula in square matrix to solving state equations is found to be effective.
关键词
拉格郎日
插值公式
网络
状态方程
求解
:Lagrnages interpolation formula
Slale lransilion malrix
Characlerislic root
Characteristicvector matrix.
