This paper elaborates several features of the sum of the cofactor ofadeterminant and provides the method to calculate the determinantofaMatrix by the sum of the cofactor of adeterminant.
给出有关代数余子式之和的几个性质并予以证明,且给出利用代数余子式之和计算行列式的方法。
2
The precise critical force ofa system can be deduced from the fact that the determinantof stiffness matrix of the system is equal to zero in the critical condition.
由结构刚度矩阵行列式值为零的失稳条件导出结构失稳特征方程,从而精确地确定系统临界力值。
3
We've studied that the wide-sense elementary transformation ofamatrix, and illustrated its application in determinant calculation, matrix inversion and the rank ofa matrix.