septic equation

The method of Descartes′ construction for 7 and 8 degree equations;

七、八次方程的笛卡儿做图

In riser design of steel casting, modulus method is the most widely used method, and the cubic equation method is a most close method in modulus method.

在铸钢件冒口设计中 ,模数法是一个广泛应用的计算方法 ,三次方程解析法是模数法中较为严密的计算方法。

In this paper,the author completely studied on the roots of the cubic equation over the field F .

完整地给出了F(设F是一个pk 元域 )上的三次方程根的状况 :在F中有且仅有一个根 ,或一个单根与一个二重根 ,或三个互异的根 ,或没有根 。

Let F be a field of 3 k elements and x 3+ax 2+bx+c=0 be a cubic equation over the field F.

F是一个 3k 元域 ,证明了F上的三次方程x3+ax2 +bx +c =0在F中有一根 ,或一根与二重根 ,或三个互异的根 ,或没有根 。

It is summed up the high equation problem for the complex hydraulic calculation in actual project.

将实际工程中的复杂水力计算问题归纳为对高次方程的求解,并提出快速、正确解决这类问题的数值方法——中点迭代法,对解决实际工程问题具有指导意义。

A cubic expression, curve, or equation.

三次表达式，三次曲线，三次方程

On the Cubic Equations over a Field of p~k(p>3)Elements;

关于p~k(p>3)元域上的三次方程

Stability of the cubic functional equation in a non-Archimedean space

Non-Archimedean空间中三次方程的稳定性

The Roots of the Cubic Equations over a Field of P~ K(P>3) Elements;

P~K(P>3)元域上的三次方程根的状况

A Solution to Three Types Continuance Linear Even Differential Equation of Two Times Complete Cubic;

二次方三项式线性齐次微分方程的解法

In this paper, the problem of limit cycle for a cubic system is studied.

讨论三次系统(方程式略)的极限环问题。

On the Solution of the Third Order Diophantine Equation;

关于三次Diophantine方程的求解问题

A Positive Integral Solution to the Indefinite Cubic Equation with 36 Equality Signs;

具有三十六个等号的三次不定方程的正整数解

Properties of Solutions of the Third Order Polynomial-like Iterative Equation and Generalization of Functional Equations for the Square Root Spiral;

三次多项式型迭代方程解的性质与二次螺线根方程的推广

The Solution of the Linear Differential Equation that Coefficient Contain Completely Cubic Type Three Function;

完全立方型三次函数为系数的线性微分方程

THE BOUNDARY CONTOUR METHOD WITh CUBIC ELEMENTS BASED ON EQUIVALENT BIE FOR 2-D PROBLEMS

平面问题等价边界积分方程的三次边界轮廓法

Small Solutions of Cubic Equations with Prime Variables in Arithmetic Progressions;

三次素变数方程在算术数列中解的上界估计

Solvability of the general three-dimensional non-homogeneous partial differential equations;

一般三维非齐次偏微分方程的可解性条件

Solutions of Three New Second-order Quadratic Differential Equations and Their General Solution Formula;

新三类二阶二次微分方程的解法及其通解公式

The Three Sufficient Conditions of Quadrature about Linear Homogenous Differential Equation of Second-order Variable Coefficient;

二阶变系数线性齐次方程的三个可积充分条件

A Cubic-Spline Difference Scheme of Higher Order Accuracy for Heat Conduction Equation;

热传导方程的高精度三次样条差分格式

An Analysis of the Positive Integral Solution to the Indefinite Cubic Equation with 10 Equality Signs;

具有十个等号的三次不定方程的正整数解

Sturm Comparison Theorem of Solution for the Third Order Homogeneous Linear Differential Equations

三阶线性齐次微分方程解的Sturm比较定理