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  • What do the symbols d dx and dy dx mean? - Mathematics Stack Exchange
    Okay this may sound stupid but I need a little help What do d dx d d x and dy dx d y d x mean? I need a thorough explanation Thanks
  • What is the difference between $dy$ and $Δy$ and why is $dx$ is same as . . .
    For examples, this dy d y as δy δ y and dx d x as δx δ x notation is used in videos like the ones mentioned in a comment by the OP Yashasv Prajapati: blackpenredpen 's “ delta y vs dy (differential) ” and The Math Sorcerer 's “ How to Compute Delta y and the Differential dy ”
  • 高等数学中,dy 的「d」是什么意思? - 知乎
    dx代表一个趋近于0的实数(有时写作h),dy的意义则演化为dx的值乘上导数。 另:我看到了目前为止最高赞的答案,d代表Differentiation我觉得是不够准确的,但也只是感觉,如果能注明出处就更好了。
  • 老师说链式法则里某个 dy dx 不能理解为 dy 除以 . . . - 知乎
    帮忙找出链式法则里一处笔误。 关于莱布尼茨记号的历史实在是太长了,有很多数学家的工作在里面,包括Bernoulli兄弟在内的大数学家在后来都对此进行了完善。有兴趣的同学可以去看《古今数学思想》第二册82-92页。
  • In differential calculus, why is dy dx written as d dx ( y)?
    In differential calculus, We know that dy dx is the ratio between the change in y and the change in x In other words, the rate of change in y with respect to x Then, why is dy dx written as d dx
  • 导数 dy dx 是不是一个整体符号? - 知乎
    由于dy dx定义的出发点,这个符号是 一个整体,而不是一个可以拆开的东西。 微分形式、流形等等概念依然十分重要:之所以定义这些概念,是因为我们想在各种各样千奇百怪的几何上继续愉快地微积分;它们的定义也自然的包含了一元函数的情况——事实上
  • 真的有抖音买粉丝这种操作吗? - 知乎
    新手想要做自媒体简直太难了,以前想开通橱窗,1000个粉丝很好搞定,除了发布优质内容外,一般有两个讨巧的渠道:第一个渠道是互关互注,比如很多人会在一些热门作品的评论区留下互关内容,还会加一些互关的群,彼此发作品链接互关。 从416抖音新规后,需要500个有效才能开通橱窗,新人
  • Why is the 2nd derivative written as - Mathematics Stack Exchange
    Here, the numerator represents d(dy) d (d y), or just the "operation" d() d () being performed on y twice, thus we can write it as d2y d 2 y In constrast, the denominator represents squaring dx d x Since dx d x is one "variable", we can remove the parentheses, resulting in the term dx2 d x 2




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