在线性代数方程组已解出之后，另一个课题需要修改它的系数矩阵，从而得到一个新的方程组。

After solving the system of linear algebraic equations, another problem is induced that requires revising this coefficient matrix in order to get a new system of equations.

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矩阵定义网路的代数方程。

This matrix defines the network algebraic equations.

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本文给出线性代数方程组反问题的对称矩阵解，及其通解表达式。

To the inverse problem of the system of linear algebraic equations, tiauthor gives a symmetric matrix solution and the expression of its general solution.

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