查询词典 evaluation of integrals

Secondly, we give rise to the new concept of double chord-power integrals of aconvex body, which considered the conclusion of geometric probability problem andthe concept and theory of chord-power integral.

接着考虑到上述几何概率问题的结论所用到的数学表达式和弦幂积分的一些相关概念和理论，引出了双弦幂积分这个全新的概念。

In §2, four met0hods for solving the integrable second order homogeneous linear ordinary differential equation with variable coefficientsy +py'+Qy=0 are given. Thus, the equation can be solved by means of elementary integrals and algebra.

给出了二阶变系数线性方程y＂＋py＇＋Qy＝0在可积的条件下的几种不同的求解方程，从而说明了这种可积的二阶方程不仅能用初等积分法求解而且也可以把它代数化，并使其通解公式化。

During this period, his research magic square, chain fraction, hypergeometric series , elliptic integrals and some ...

在这段期间，他自己研究魔方阵、连环分数、超几何级数、椭圆积分及一些。。。

During this period, he studies magic square, chain fraction, hypergeometric series , elliptic integrals and some ...

在这段期间，他自己研究魔方阵、连环分数、超几何级数、椭圆积分及一些。。。

Chapter 4, omitting the section on the existence of the integral but includng improper integrals.

第四章略去了关于积分存在性那一节，且包括广义积分。

The characteristic of this method lies in transforming improper integral into the usual one. Thus various kinds of usual approximate integrals can be used, and the observed data may be calculated directly and conveniently to obtain necessary numerical accuracy.

该方法的特点是把Abel变换的广义积分变化成通常的积分，这样就能够使用各种通常的近似积分公式直接从实验数据计算到所要求的数据精度。

Under some conditions,the effective method in the second kind of line integrals and the differential equation is derived by using the improvising differential method of indefinite integral.

给出了在一定的条件下，利用不定积分的凑微分法得到了第2类曲线积分及微分方程的一些较为方便的解法

The integration by second substitution is an important method of calculating indefinite integral,it has a certain application,it usually applies to calculate some integrals of irrational function.

第二换元积分法是求函数不定积分的一种重要方法，具有一定的适用范围，对某些无理函数的积分的求解通常使用该方法。

An optimal control model is developed for the definite linear economic systems with an inequality constraint on state integrals, based on the dynamic input-output theory.

利用动态投入产出模型和控制理论方法相结合，对经济系统进行分析和宏观调控·具有状态积分不等式约束的确定性线性经济系统最优控制模型，是基于动态投入产出理论建立的·利用无约束条件的极大值原理，分析了最优技术与经济控制策略的存在性和惟一性，使得产品的实际产出尽量接近理想产出，同时使能源、资金等消耗最小，并给出了最优反馈控制的形式

-integrals of vector valued functions on infinite interval

无穷区间上n维模糊数值函数的积分：背景，定义及刻划

The changes of the HAF after liver injury may be related to the volume of blood loss, the intraabdominal pressure and the pneumoperitoneum duration.

肝撞击伤伴失血后肝动脉血流量的变化与失血量、气腹压力以及气腹持续时间等有密切联系。

Reneging on our commitments to the world's poor cannot be an austerity measure, she said.

放弃我们给世界上的穷国的承诺不能成为一种紧缩措施。