For if these increases of income or utility are reduced to being infinitesimal, one can use both the symbolism and the powerful manipulations of the differential calculus.
因为，如果这些收入或效用的增加可以化为无穷小，那我们既能使用符号表示，也能利用微分学强大的操作了。
Indeed it was this analysis which led Newton and Leibnitz to the discovery of differential calculus.
就是这样的分析使牛顿和莱布尼兹发明了微积分。
Integral upper limit function is a basic concept in function differential calculus.
积分上限函数是一元函数微分学的基本概念。
In theory the paper discusses a usage of an important limit formula of differential calculus.
本文从理论上讨论微分学第二重要极限公式的一个使用方法。
Limit is the soul of differential calculus, limits' calculation is an important content of the limit theory.
极限是微分学的灵魂，极限的计算是极限理论的重要内容。
Traffic momentum differential equation and Euler's equation are constructed by means of differential calculus.
通过对交通流参数的微分分析，建立了交通流的运动微分方程和欧拉方程。
In this paper, a primary proof about a stability criterion of a constant discrete linear system is given by means of differential calculus.
本文用微分学方法给出了关于定常离散线性系统稳定性判据的一种初等证明。
According to different features of conclusion about middle value questions in differential calculus, four kinds of methods about the auxiliary function structures will be concluded.
针对微分中值问题的结论的不同特征，本文归纳出了辅助函数的四种构造方法。
Rolle's theorem plays a very important part in the study of one differential calculus. This paper attempts to explore the application of Rolle's theorem from the perspective of constructing function.
罗尔定理在一元微分学处于很重要的地位，本文通过构造函数的思想来探究罗尔定理的应用。
Differential calculus, you say?
你是说做微积分吗？
Differential calculus doesn't need to just be an equation, but the odometer and speedometer on a car.
微积分并不只会在等式中出现，它还会在汽车的里程表和速度表中应用。
Differential calculus doesn't need to just be an equation, but the odometer and speedometer on a car.
微积分并不只会在等式中出现，它还会在汽车的里程表和速度表中应用。
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