Method of completing square is often used when transforming a quadratic form into a normal one, whose process is equivalent to making the relevant matrix contract diagonal.
二次型化标准形常采用配方法，而二次型化标准形等价于它的矩阵合同对角化，文中利用初等矩阵和初等变换之间的关系。
In the design process of large span cable-stayed bridge, the influences of diagonal rope sags on the construction must be taken into account.
大跨度斜拉桥在设计过程中必须考虑斜拉索垂度对结构的影响。
This paper proposes a solving process of the special triple diagonal systems. And the process is proven to be stable and easy to do with less calculation.
本文讨论了一类特殊的三对角线性方程组的解法，这种解法既是稳定的，运算量又较少。
This paper proposes a solving process of the special triple diagonal systems. And the process is proven to be stable and easy to do with less calculation.
本文讨论了一类特殊的三对角线性方程组的解法，这种解法既是稳定的，运算量又较少。
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