Oct 7, 2015 · dx (t)/dx vs. dx/dx Ask Question Asked 10 years, 1 month ago Modified 10 years, 1 month ago

Dec 17, 2019 · 所以针对楼主问题的答案，什么是dx，dx就是自变量的微分，它等于一个无穷小量，既然是自变量的微分，就可以进行各种运算，比如3dx=d3x一样。 但是永远别忘了，有一个高阶无穷小 …

I know dy/dx for example means "derivative of y with respect to x," but there's another context that confuses me. You will generally just see a dx term sitting at the end of an integral equation an...

其中一派被称之为 实无穷派，他们最大的特点认为无穷小量是一种实实在在的量，可以和其他实数一起参与代数运算，比如加减乘除，代入到基本函数里面。比如，实无穷派可以内心毫无波澜地写成下面的 …

Aug 21, 2023 · 不定积分符号为什么是∫dx？ 为什么要加一个dx？ 是不是多此一举了？ 这样对于初学者很容易把不定积分和定积分给弄混啊 显示全部 关注者 292

Jun 21, 2014 · 概念的话dx就是把定义域的x范围无限分（微分）其中的一份如x1 到x2 这一小段就是dx。 同理，dy就是值域的无限分为f (x2)-f (x1)。 dy/dx 是f (x)一个微分成dx dy围成的小三角形的tan值。 …

微分运算中dy=AΔx+o(Δx)为什么不是dx？之前有的说dx就是极小的Δx随着逐渐的学习发现好像也不完全如此？

A "signed definite integral" for computing work and other "net change" calculations. The value of an expression such as $\int_0^1 x^2\,dx$ comes out the same under all these interpretations, of course. …

The symbol used for integration, $\int$, is in fact just a stylized "S" for "sum"; The classical definition of the definite integral is $\int_a^b f (x) dx = \lim_ {\Delta x \to 0} \sum_ {x=a}^ {b} f (x)\Delta x$; the limit …

May 2, 2015 · Okay this may sound stupid but I need a little help... What do $\Large \frac {d} {dx}$ and $\Large \frac {dy} {dx}$ mean? I need a thorough explanation. Thanks.