微积分

Infinite integral is a type of improper integral in calculi, and it is also a difficult point in integral.

无穷限积分是微积分学中广义积分的一种类型，是积分知识的一个难点内容。

The indefinite integral calculation is one important sector in calculus.

不定积分的计算是微积分中的重要一环，熟练掌握不定积分的概念和正确选用不定积分的方法是实施不定积分的关键。

Proves the calculus basic formula by the relation between function increment and differential,states briefly the intrinsic connection among indefinite integral, definite integral,derivativee and defferential.

利用函数增量与微分的关系证明了微积分基本公式，简洁地阐明了导数、微分、不定积分和定积分的内在联系。

Gerber-Shiu discounted penalty function is studied and a solution is obtained to the iuntegro-differertial eqution which is in the form of an infinite series by means of integral transform.

在常利率环境下，研究当索赔时间间隔为Erlang(2)分布且保费收取为两步保费的风险模型，推导出该模型Gerber-Shiu罚金折现期望函数所满足的微积分方程。

limit theory is very important content and special difficulties, it contains the subject of infinitesimal calculus.

极限理论贯穿整个微积分学，是微积分的重要内容和难点。认识极限思想是把握和理解极限理论的前提。

This is normal, and the arbitrary function all can approach with dividing section multinomials because can know from infinitesimal calculus.

这是正常的，因为从微积分可以知道，任一函数都可以用分段多项式来逼近。

The exponential analysis method in the statistical principle is studied by using infinitesimal calculus method,and the more precise method for different forms of alteration and variable quantity in exponential analysis method is put forward.

应用微积分方法对统计学原理中的指数分析方法进行了研究，提出了对指数分析法中的变量变动的不同形式进行更为精确他测定的方法。

According to the principles of infinitesimal calculus ,a new method on how to ratiocinate the arbitrary quadrilaterals area was put forward.

利用微积分原理给出任意四边形面积公式推证的一种新方法。

He is well received by the students and their parents.The fields that Mr he is studying on now are having a hit on the GRE words and the standard American English listening ability,as well as maths including infinitesimal calculus,linear algebra and probability theory and their application in economics.

现在何老师学习和研究的方向是英语要突破 GRE 词汇和标准美语听力，数学是微积分，线性代数和概率论与数理统计及其在经济中的运用。

To perfect it,this paper,by using the basic knowledge in definite integral Newton—'Leibniz formula,offers an applied method of definite integral,partial quantity function infinitesimal calculus method,which is both theoretically reliable and easily applied.

一般教材都使用"微元法"给出被积函数，这一方法在理论上并非严格，为弥补该方法在理论上的不足之处，将定积分的应用方法总结为"部分量函数微积分法"。

Do you know, i need you to come back

你知道吗，我需要你回来

Yang yinshu、Wang xiangsheng、Li decang,The first discovery of haemaphysalis conicinna.

1〕 杨银书，王祥生，李德昌。安徽省首次发现嗜群血蜱。