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。
By means of congruent transformation in matrix, the method of transforming real quadratic form into standard form and the method of normal orthogonal basis are given in this paper.
借助矩阵的合同变换法，给出了化实二次型为标准形的方法、求标准正交基的方法，并给出了正定二次型判定定理的新证明。
An expression for the mean and covariance matrix of normal random matrix polynomial is derived by applying the method of matrix differentiation to generating function.
本文应用对母函数微分的方法得到正态随机矩阵多项式的均值与协差阵的表达式。
What's more, modification is made based on normal elastic ground resistance method and a rigid matrix for elastic ground beam element is detruded.
另外，本文对现有常规的弹性抗力法作了一定的改进，推导出了一种能更好考虑桩土相互作用的弹性地基梁单元刚度矩阵。
In this paper we discussed and method and gave an algorithm for gray-level pictures output using normal 24 pins dot-matrix printer.
本文讨论了利用普通的24针点阵打印机输出灰度图像的方法，并给出一个算法。
In this paper we discussed and method and gave an algorithm for gray-level pictures output using normal 24 pins dot-matrix printer.
本文讨论了利用普通的24针点阵打印机输出灰度图像的方法，并给出一个算法。
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