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汉语拼音：èr cì fāng chéng

未知数最高次幂为2的方程式，如 2x 2 +3x-5=0。

二次方程 [èr cì fāng chéng]

• The result said that, the three-section method can lower the difficulty when a quadratic equation is considered, and with a good Precision.

  研究表明，使用三段法可以有效的降低由于使用二次方程对非线性段进行描述所带来的建模及模型求解难度，并能够保持较高的精度。

• Notice that this second equation is a quadratic equation in v of P.

  注意，第二个方程是，关于vp的二次方程。

• Hence, form a quadratic equation whose roots are the reciprocals of the roots of the equation .

  由此，求一个二次方程，使它的根是方程的根的倒数。

• Results Give the source of two important rules and point out that they described the root about a quadratic equation.

  结果合理给出了法则的来源依据，指出法则的实质是在描述一个一元二次方程的根。

• Meanwhile, each of them focused on specific mathematical topics, from quadratic equations to the numbers behind poker.

  同时，他们每个人侧重于具体的数学课题，从二次方程到扑克的数学规律。

• and (2) the correlation between the first order modal frequency and loading level is approximately a quadratic function in failure process.

  拱破坏过程中第1阶模态频率值与所受荷载之间的关系可近似用二次方程来描述。

• This program calculates the root(s) of the quadratic equation with very common and simple algorithms.

  这个程序能用非常普通和简单的算法来计算一个二次方程的根。

• The merit and defect of Newton method for the quadratic matrix equation were analyzed.

  分析了牛顿法解二次方程的优点和缺点。

• Everything in algebra was boring extrapolation after that, including the quadratic equation, which I have never used in my life.

  以后代数中的种种推论都很枯燥，包括二次方程式，我这辈子从未用过它。