二次方程

It also states that students "should know how to use quadratic functions to solve extremum problems in everyday life". It seems to me that befe all these, students should be properly taught the technique of completing the square (which underlies the solution of extremum problems of any kind) and the quadratic formula (which would then give *exact* solutions of quadratic equations).

我认为，在学习这些之前，应该适当地教给学生配平方的技巧（它是解决任何最值问题的基础），以及二次求根公式（它能给出二次方程的精确解）。

Of or relating to geometric surfaces that are defined by quadratic equations.

二次曲面的由二次方程式所定义的几何平面的，或与其有关的

This book gave us the first systematic solution of linear and quadratic equations.

这本书第一次系统的提出了线性方程和二次方程的解法。

Just like that there are an irrational root and a rational root for the existence of quadric equations with one unknown, there is objectively a "triple root" solution for sports will: these three roots are unified root, rational root and irrational root.

正像数学一元二次方程存在无理根和有理根那样，体育意志也客观地存在着"三重根"：它们是统一根、有理根和无理根。

Just like that there are an irrational root and a rational root for the existence of quadric equa-tions with one unknown, there is objectively a "triple root" solution for sports will: these three roots are unified root, rational root and irrational root.

正像数学一元二次方程存在无理根和有理根那样，体育意志也客观地存在着"三重根"：它们是统一根、有理根和无理根。

The discussion of the fourth kind of quadratic equation , the use of "rule of three", the calculation of number r and some terms Algebra can be found in Indian classics introduced to Arab and some of these mathematical knowledge maybe comes from China (such as "rule of three").

花拉子米对第四种二次方程的讨论，使用的"三率法"，对圆周率的计算以及某些术语可以在早期传入阿拉伯的印度典籍中找到出处，而在这些数学知识中有一些可能是远源于中国的。

It's kind of like a second-degree equation.

就像是二次方程

Quadratic Equation Solving Function - This function solves a standard quadratic equation .

这个函数求解一个标准的二次方程。

The beginning of this article gives the definition of elliptic curve, ellipse standard equation, and the long axis of oval, short, with an area of the formula of a binary quadratic equation of the circumstances under which the judge said to provide the basis of an oval, as well as the conditions in this the long axis of the ellipse, short, with an area of what is the formula?

本文开始给出了椭圆曲线的定义，椭圆的标准方程，及椭圆的长轴，短轴，面积公式，对一个二元二次方程在什么情况下表示椭圆提供了判断依据，以及在此条件下的椭圆的长轴，短轴，面积公式是什么？

These present many different kinds of practical mathematical problems, including applications to surveying, salary distributions, calculations of the areas of simple geometric surfaces and volumes such as the truncated pyramid, and simple solutions for first- and second-degree equations.

这些卷宗呈现出许多不同种类的实用数学问题，其中包括测量中数学的应用，发放薪金，计算像截棱锥这样简单的几何表面积的体积，还有简单的一次二次方程式解法。

According to the clear water experiment, aeration performance of the new equipment is good with high total oxygen transfer coefficient and oxygen utilization ratio.

曝气设备的动力效率在叶轮转速为120rpm～150rpm时取得最大值，此时氧利用率和充氧能力也具有较高值。

The environmental stability of that world - including its crushing pressures and icy darkness - means that some of its most famous inhabitants have survived for eons as evolutionary throwbacks, their bodies undergoing little change.

稳定的海底环境─包括能把人压扁的压力和冰冷的黑暗─意谓海底某些最知名的栖居生物已以演化返祖的样态活了万世，形体几无变化。