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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

    Jan 31, 2013 · 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 …

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

    Jan 19, 2022 · Approximate solution to an equation with a high-degree polynomial Ask Question Asked 3 years, 10 months ago Modified 3 years, 10 months ago

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

    Feb 25, 2017 · 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. Approximate functional equation for the Riemann zeta function

    Dec 12, 2018 · The Riemann zeta function admits the approximation $$\zeta (s)\sim\sum_ {n=1}^N\frac {1} {n^s}+\gamma (1-s)\sum_ {n=1}^M\frac {1} {n^ {1-s}},$$ in the critical strip, …

  6. notation - Different use of approximate equality symbols

    Apr 12, 2016 · 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 quantities. I …

  7. How to approximate $\\sin x$ without using trigonometry tables?

    An Opening Note : First of all, I want to make this very clear that by the phrase "without using trigonometry tables", I mean without using them to find $\\sin$ values of the "non-standard …

  8. How to quickly approximate a value - Mathematics Stack Exchange

    Jul 28, 2023 · As a rough approximation, I would make use of $2^ {10} = 1024$ is approximately $10^3$ and get $\frac {10^6 - 11} {2^ {12}} \approxeq \frac {10^6} {2^ {12}} = \frac {10^6} {4 …

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

    Jan 1, 2023 · When the value of $x$ is small, such as when $x$ is less than $1$, we can use the Taylor series to approximate its behavior. The first few terms of the series often ...

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

    Aug 12, 2015 · 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 approximately B. …