
[數] 微分;[數] 微分學
Traffic momentum differential equation and Euler′s equation are constructed by means of differential calculus.
通過對交通流參數的微分分析,建立了交通流的運動微分方程和歐拉方程。
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.
因為,如果這些收入或效用的增加可以化為無窮小,那我們既能使用符號表示,也能利用微分學強大的操作了。
In fact, Marx and Engels, the two non- mathematicians, had put forward the methods to the crisis in differential calculus respectively, but their solution was inconsistent with others.
事實上,兩位非數學家馬克思、恩格斯對微積分存在的神秘性問題也都提出了自己的方法,但兩個人的微分基礎與别人不一緻。
In theory the paper discusses a usage of an important limit formula of differential calculus.
本文從理論上讨論微分學第二重要極限公式的一個使用方法。
In mathematics, two theorems, one associated with differential calculus and one with integral calculus.
數學中的兩個定理。分别與微分學和積分學相關。
Numerical and vectorial analysis Differential calculus : multivariable functions.
數值和矢量分析微分:多變量函數。
Considering the overtaking flow, this paper built the continuum equation of mixed traffic flow, set up the kinematics differential equation by means of differential calculus.
通過對交通流參數的微分變換,建立了混合交通流的運動微分方程。
Integral upper limit function is a basic concept in function differential calculus.
積分上限函數是一元函數微分學的基本概念。
In this paper, a primary proof about a stability criterion of a constant discrete linear system is given by means of differential calculus.
本文用微分學方法給出了關于定常離散線性系統穩定性判據的一種初等證明。
The article proves the difference in the differential calculus between rotation transformation tensors around moving and resting axises and explains it with a practical example.
本文論證了動軸旋轉變換張量與靜軸旋轉變換張量微分的區别,并以實例給予說明。
Limit is the soul of differential calculus, limits' calculation is an important content of the limit theory.
極限是微分學的靈魂,極限的計算是極限理論的重要内容。
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.
針對微分中值問題的結論的不同特征,本文歸納出了輔助函數的四種構造方法。
Maxwell's theory of electromagnetism and Einstein's theory of general relativity are also expressed in the language of differential calculus.
麥克斯韋電磁理論和愛因斯坦的廣義相對論也表示的語言微分。
Often the existence axioms of classic in the differential calculus square distance can't use.
常微分方程中經典的存在性定理不能使用。
Differential calculus, you say?
你是說做微積分嗎?
In this paper, the writer has formulated by the differential calculus method a calculating equation for the critical velocity of the Bingham two-phase fluid.
筆者用微分法推導出了關于賓漢流體固液兩相流臨界流速計算公式。
Indeed it was this analysis which led Newton and Leibnitz to the discovery of differential calculus.
就是這樣的分析使牛頓和萊布尼茲發明了微積分。
This paper introduces the algebraic method for discussing the problems in differential calculus, and puts forwards many interesting propositions.
文章用代數的方法讨論了微分學中的某些問題(如曲線、曲面的切空間、極值、凸函數理論等),得到了許多有趣的命題;
Differential calculus, you say? Chess?
你認為是各種數學計算、象棋呢?
Differential calculus as the basis for the limit theory, as early as in ancient times with a relatively clear exposition.
作為微分學基礎的極限理論來說,早在古代以有比較清楚的論述。
The structure method of auxiliary function is very important in solving questions about middle value theorem in differential calculus.
構造輔助函數法是解決有關微分中值問題的一種重要數學方法。
The emphasis is on the concepts, techniques, and applications of differential calculus and basic integral calculus.
它主要強調理解差異積分和基本積分的概念、技巧、應用。
The differential calculus of the pluralistic function is both the key and difficult point in higher mathematics.
求最值問題是中等數學永恒的話題,其中,多元函數求最值是難點。
In the General physical mechanics, about oscillation, teaching materials start with differential calculus equation, solve the equation directly and obtain the features of oscillation.
在普通物理的力學部分,關于簡諧振動的分析,教材一般都從振子的微分方程出發,直接解微分方程得到簡諧振動的特征。
|differential coefficient;[數]微分;微分學
微分學(Differential Calculus)是數學分析的核心分支之一,主要研究函數的瞬時變化率和局部行為。它通過導數這一工具,量化函數在某一點附近的變化趨勢,例如物體運動的瞬時速度或曲線切線的斜率。微分學的理論基礎由牛頓(Isaac Newton)和萊布尼茨(Gottfried Leibniz)在17世紀獨立建立,現廣泛應用于物理學、工程學、經濟學等領域。
導數定義
函數( f(x) )在點( x=a )處的導數定義為極限: $$ f'(a) = lim_{h to 0} frac{f(a+h) - f(a)}{h} $$ 導數表示函數在該點的瞬時變化率,例如位置函數的導數是速度。
微分與線性近似
微分( dy = f'(x)dx )通過線性函數逼近函數在微小變化下的響應,常用于誤差分析和工程建模。例如,電路分析中可用微分近似元件參數的微小變化對整體系統的影響。
應用領域
以自由落體運動為例,若物體高度隨時間變化的函數為( h(t) = 4.9t ),其導數( h'(t) = 9.8t )表示瞬時速度,二階導數( h''(t) = 9.8 , text{m/s} )對應重力加速度。
微分學(Differential Calculus)是微積分(Calculus)的一個核心分支,主要研究函數的導數(Derivative)及其應用。它通過分析函數在微小變化中的行為,揭示變量之間的瞬時變化率關系。以下是詳細解釋:
導數的定義:
導數表示函數在某一點的瞬時變化率,即當自變量(如時間、位置)發生極小變化時,函數值的改變量與該自變量變化量的比值。數學上定義為:
$$
f'(x) = lim_{h to 0} frac{f(x+h) - f(x)}{h}
$$
例如,位移關于時間的導數是速度,速度的導數則是加速度。
幾何意義:
導數對應函數圖像上某一點的切線斜率,用于描述曲線在該點的局部變化趨勢。
常見函數的導數:
運算法則:
包括鍊式法則(複合函數求導)、乘積法則、商法則等,用于處理複雜函數的導數計算。
微分學由牛頓(Isaac Newton)和萊布尼茨(Gottfried Leibniz)在17世紀獨立發展,最初用于解決天文學和力學中的運動問題,現已成為現代科學和工程的基礎工具。
如果需要具體例子或進一步探讨某類問題的解法,可以補充提問!
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