【摘要】 本文对行列式的两个命题,给出了一种将行列式中若干元素用未定元素代人的证明方法。这种方法,对行列式的求值也很有用。更多还原

【Abstract】 We adopt method to prove two propositions of the determinant by using some unknown elements to take the place of the original elements in the determinant. This method is also useful to get the value of the determinant.更多还原