二元二次方程

多项式回归分析表明，花粉可育率对特效烯浓度和播期的反应是二元二次方程。

Polynomial regression analysis indicated that the reaction of fertile pollen rates to tetcyclacis concentrations and dates showed a quadratic relationship .

运用MATLAB软件编写算法程序，对径向磁通密度特征的二元二次拟合方程组进行求解，得到重构的缺陷的几何参数。

The binary quadric fitting equations of radial magnetic flux density feature are solved by MATLAB and defect parameters of reconstructed defect are found .

并且利用其结果得到了几类二元二次不定方程的整数解表达式。

And based on these results the expressions for some binary indefinite quadratic equations integer solutions are obtained .

耕作后原耕层土壤距地表深度随耕作前距地表深度及坡度的变化可用二元二次抛物面相关方程描述；

The variations of soil depth after tillage with its depth before tillage and slope gradient can be described with a binary quadratic paraboloid regression equation .

应用二次曲线束理论揭示解二元二次方程组的几何意义。

Apply the theory of pencil of conics to reveal the geometric significance of simultaneous equations of second degree with two unknows .

利用一元二次方程的求根公式构造二元二次方程组的迭代算法，通过图解二元二次方程组的解来说明迭代算法在实践中的应用。

In this paper , the author gives the formula of roots of a quadric equation over a field of2 k elements and presents the problem .