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  1. calculus - dx (t)/dx vs. dx/dx - Mathematics Stack Exchange

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

  2. calculus - Finding $\int x^xdx$ - Mathematics Stack Exchange

    Jan 12, 2016 · These identities for $\int_0^1 x^ {-x}\ dx$ and $\int_0^1 x^x\ dx$ are sometimes called the "sophomore's dream". Look that up on Wikipedia.

  3. What does the dx mean in an integral? [duplicate]

    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...

  4. What is $dx$ in integration? - Mathematics Stack Exchange

    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 …

  5. What do the symbols d/dx and dy/dx mean? - Mathematics Stack …

    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.

  6. ordinary differential equations - When to write "$dx$" in ...

    Jan 9, 2015 · I'm taking differential equations right now, and the lack of fundamental knowledge in calculus is kicking my butt. In class, my professor has done several implicit differentiations. I …

  7. Is There a Difference Between $d^2x$ and $ (dx)^2$?

    Here, $ (dx)^2$ means $dx \wedge dx$, and the fact that it vanishes comes from the fact that the exterior algebra is anti-commutative. In other words, formally we have $d^2x=0$ and $ …

  8. calculus - What is the true, formal meaning and reason for the "dx ...

    Sep 9, 2020 · But then others told me that "dx" is part of what's being integrated, and they started saying that we're led to believe that its just a delimiter in early courses because it'd be …

  9. Meaning of dx, dy, du (u-substitution) - Mathematics Stack Exchange

    Apr 8, 2018 · I understand the meaning of $\frac {dy} {dx}$ and $\int f (x)dx$, but outside of that what do $dy, du, dx$ etc.. mean? When I took calc I, derivatives and integrals were given a …

  10. Integrating $\int \sin^n {x} \ dx$ - Mathematics Stack Exchange

    I am working on trying to solve this problem: Prove: $\\int \\sin^n{x} \\ dx = -\\frac{1}{n} \\cos{x} \\cdot \\sin^{n - 1}{x} + \\frac{n - 1}{n} \\int \\sin^{n - 2}{x ...