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  1. notation - What does := mean? - Mathematics Stack Exchange

    Mar 5, 2011 · What does := mean? where we are saying that the two sides are equal, but we are not defining "1" to be the expression " sin2(θ) +cos2(θ) sin 2 (θ) + cos 2 (θ) ". Basically, some …

  2. 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 …

  3. What does it mean for an "integral" to be convergent?

    Feb 17, 2025 · ": It's a limit, which is just a real number (given that the limit exists). So an improper integral is a limit which is a number. Does it make sense to talk about a number …

  4. inequality - What does <> mean? - Mathematics Stack Exchange

    Jul 28, 2021 · What do the less-than and greater-than symbols right next to each other mean? Does it mean either less than or greater than? In other words, not equal? I am trying to …

  5. Bar Mean vs Bracket Mean - Mathematics Stack Exchange

    However, usually non-arithmetic means are explicitly denoted --for instance, x¯G x G, x~ x, and G(x) G (x) are used for geometric mean--, which means x¯ = x x = x for most practical cases. …

  6. What do brackets mean in maths? - Mathematics Stack Exchange

    Oct 21, 2023 · I know that brackets are used to group variables and numbers together. Do brackets serve the same purpose when they are used with other 'objects' such as matrices or …

  7. What does the symbol := mean in mathematics? [duplicate]

    What does the symbol := mean in mathematics? [duplicate] Ask Question Asked 9 years, 6 months ago Modified 7 years, 8 months ago

  8. How do I combine standard deviations of two groups?

    Oct 26, 2018 · I have 2 groups of people. I'm working with the data about their age. I know the means, the standard deviations and the number of people. I don't know the data of each …

  9. What does the small number on top of the square root symbol …

    I just came across this annotation in my school's maths compendium: The compendium is very brief and doesn't explain what this means.

  10. What does the derivative really mean? - Mathematics Stack …

    Jan 23, 2022 · Ultimately what the derivative actually means is its precise limit definition, and nothing else. Any other explanations you see are just imprecise intuitive approximations to that …