二重积分

At last,for the double integral which the boundary curve of its domain of integration is denoted by the panameter equation, we will supply a directed method which do not eliminate the parameter.

对积分区域的边界曲线由参数方程表示的二重积分，我们也将给出两种不经消参数而直接计算的方法。

In this paper, find Euler's formula using double integral , power series convergence and uniform convergence in the convergence region.

本文利用二重积分公式，幂级数在收敛区间内的收敛性质、一致收敛性质及可逐项积分的性质来证明Euler公式

The introduction of one way to solve the problem of definite integral by means of double integral.

介绍利用二重积分解决有关定积分问题的一种方法。

Double integral the definite integral of thinking to a three-dimensional space, have been more practical application, but it can be said of their way of thinking and the definite integral of exactly the same.

二重积分把定积分的思维推向了三维立体空间，得到了更多的实际运用的地方，但其思考方法可以说和定积分的完全一致。

The paper introduces the method of calculating double integral with symmetry,and then puts forward a calculating method by rebuilding integrand and domain of integration reasonably.

本文还介绍了如何利用对称性来计算二重积分，并提出了通过适当改造被积函数和积分区域以利用对称性来简化计算的方法。

This paper gives a method to solve double integration by integral subsection integration.

本文给出了用定积分的分部积分法求解二重积分的一种方法。

Property 3 The double integral is additive with respect to the integration region, that is, if is divided into two regions and and the area of is 0, then

性质 3 二重积分关于积分区域具有可加性，即如果被分成两个区域和，的面积为 0，则有

Say from the angle of mathematics, This software mainly plays to show the integral calculus of Bernhard Riema , together two heavy integral calculuses of a function.

从数学的角度说，本软件主要将演示黎曼积分、齐次函数的二重积分。

Moreover,we also gave the proofs of generalization formula of integration by parts,the Green s formula of first type and the Green s formula of second type by using the divergence theorem .

首先指出数学分析中反映二重积分和第二类平面线积分联系的Green公式可以看成是散度定理的一种特殊情形，然后利用散度定理给出广义分部积分公式、第一Green公式和第二Green公式的证明

Methods By using Lebesgue integral and Fouries series, area transformation formula of planar domain and variant transformation formula of double integral are discussed.

利用勒贝格积分和傅立叶级数讨论平面区域面积变换公式和二重积分变量变换公式。

The basic concept of FOP can be summarized as to further optimize effective prescription according to the standard of curative effects and with the aid of modern science and technology and theories of traditional Chinese medicine.

其基本内涵可概括为：以确有疗效的中药复方为研究对象，以现代科学技术和传统中医药理论为技术支持，以该复方所治病证的药效响应为评价标准，以优化重组疗效更优的新复方为研究目的。

Ever since our world has been a world, native forests have been indiscriminately exploited by man.

自从我们的世界一直是世界原生森林被任意剥削人。