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  1. Difference between "≈", "≃", and "≅" - Mathematics Stack Exchange

    In mathematical notation, what are the usage differences between the various approximately-equal signs "≈", "≃", and "≅"? The Unicode standard lists all of them inside the Mathematical …

  2. What exactly is "approximation"? - Mathematics Stack Exchange

    One can, for example, approximate continuous functions with polynomial functions, in which case the idea is to keep the area between the original function and the approximating function …

  3. Approximate solution to an equation with a high-degree polynomial

    2022年1月19日 · Approximate solution to an equation with a high-degree polynomial Ask Question Asked 3 years, 11 months ago Modified 3 years, 11 months ago

  4. What is the approximate identity? - Mathematics Stack Exchange

    2017年2月25日 · An approximate identity (in the sense that you've described) is a sequence of operators, usually derived from some "nice" class, that converge to the identity operator in the …

  5. notation - Different use of approximate equality symbols

    2016年4月12日 · I have been wondering for a long time whether there is a unequivocal way to define and use the symbols commonly adopted for an approximate equality between two …

  6. real analysis - How to approximate $e^ {-x}$ when $x$ is large ...

    2023年1月1日 · How to approximate $e^ {-x}$ when $x$ is large Ask Question Asked 3 years ago Modified 3 years ago

  7. Is there a "greater than about" symbol? - Mathematics Stack …

    2015年8月12日 · To indicate approximate equality, one can use ≃, ≅, ~, ♎, or ≒. I need to indicate an approximate inequality. Specifically, I know A is greater than a quantity of …

  8. Approximation of square roots - Mathematics Stack Exchange

    2018年10月2日 · Recently, I've seen a YouTube video where they approximate square roots real quick. They use this approximation : $$\\sqrt{x} \\approx \\lfloor \\sqrt{x} \\rfloor+ ...

  9. exponential function - Feynman's Trick for Approximating $e^x ...

    2017年7月7日 · And he could approximate small values by performing some mental math to get an accurate approximation to three decimal places. For example, approximating $e^ {3.3}$, …

  10. Approximate $\coth (x)$ around $x = 0$ - Mathematics Stack …

    2017年4月13日 · I'm trying to approximate $\coth (x)$ around $x = 0$, up to say, third order in $x$. Now obviously a simple taylor expansion doesn't work, as it diverges around $x = 0$.