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1·For instance, in order to use the quadratic formula you must have the quadratic in standard form first.

例如，为了使用二次方程式，你需要知道标准的二次平方式。

2·Both vegetables and quadratic polynomials are made more interesting with the Mandelbrot set. The formula explains the repeating complexity of broccoli heads like this one.

有了曼德尔勃特集合，蔬菜和二次多项式都变得有趣多了。这个方程序表现了类似图中的花椰菜菜籽的重复的复杂性。

3·By applying matrix moment distribution method, we deduce that error calculation formula of moment quadratic distribution method.

应用矩阵力矩分配法推导出了力矩二次分配法的误差计算公式。

4·On the other hand, it also derives the covariance propagation formula of non-linear function containing quadratic term in matrix form using the matrix theory etc.

另一方面又利用矩阵理论等推导出含有二次项的非线性函数的协方差传播公式的矩阵形式。

5·Neglecting magnetic intensity higher than quadratic terms, various parameters in phenomenological formula for cubic symmetry crystal are calculated from our experimental data.

在略去高于磁场强度二次项的情况下，从实验结果计算出立方对称晶体唯象公式中的诸参数。

6·Computing formula of performance index shows this predictive controller is suboptimal with respect to quadratic performance indexes.

由性能指标计算公式表明，该预测控制器关于二次型性能指标是次优的。

7·By analysing the compute result of the quadratic approximation formula, we educe the conclusion that 3 is the best rank code for the quadratic approximation formula.

通过对最小二乘拟合公式实际计算结果的分析，得出了“拟合公式阶数取3为最佳”的结论。

8·The extremal formula of binary quadratic functions is studied by using method of undetermined coefficients, substitution method and method of completing the square.

用特定系数法、换元法、配方法探求二元二次函数的极值公式。

9·Derived the formula for computing quadratic harmonics of output current in the single phase unit power factor ac DC converter based on analysis of the circuit module of the equivalent current source.

在基于对等效电流源电路模型分析的基础上，推导出了单相单位功率因数变流器输出电流二次谐波的计算公式，将输出二次谐波电流正、反向交替注入交流输入侧来抵消电流中的谐波。

10·A new formula is obtained to find out regression coefficients, based on the fact that the quadratic sum of distance between line and spots in minimum.

由点线距的平方和最小，得出一种求回归系数的新公式。