在初等数学中 ,常常需要研究若干变量的相互关系 ,而这些变量往往由几个结构相似、含共同字母的等式联系着 ,此时 ,利用高等代数中齐次线性方程组解的理论能直接建立变量间的相等关系 ,从而有助于问题迅速的得以转化和解决 .在高等代数中 ,有[1]定理　含有ｎ个未知量ｎ个方程的 In elementary mathematics, it is often necessary to study the interrelationships of several variables, and these variables are often related by several structurally similar equations containing common letters. At this point, the theory of solving linear equations in higher algebra can be directly The establishment of equality between variables facilitates the rapid transformation and resolution of problems. In higher algebra, there are [1] theorems containing n unknowns n equations.