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  2. Binary logarithm - Wikipedia

    en.wikipedia.org/wiki/Binary_logarithm

    In mathematics, the binary logarithm (log 2 n) is the power to which the number 2 must be raised to obtain the value n. That is, for any real number x, = ⁡ =. For example, the binary logarithm of 1 is 0, the binary logarithm of 2 is 1, the binary logarithm of 4 is 2, and the binary logarithm of 32 is 5.

  3. List of logarithmic identities - Wikipedia

    en.wikipedia.org/wiki/List_of_logarithmic_identities

    For example, two numbers can be multiplied just by using a logarithm table and adding. These are often known as logarithmic properties, which are documented in the table below. [2] The first three operations below assume that x = b c and/or y = b d, so that log b (x) = c and log b (y) = d. Derivations also use the log definitions x = b log b (x ...

  4. Logarithm - Wikipedia

    en.wikipedia.org/wiki/Logarithm

    The graph of the logarithm base 2 crosses the x-axis at x = 1 and passes through the points (2, 1), (4, 2), and (8, 3), depicting, e.g., log 2 (8) = 3 and 2 3 = 8. The graph gets arbitrarily close to the y-axis, but does not meet it. Addition, multiplication, and exponentiation are three of the most fundamental arithmetic operations.

  5. Talk:Binary logarithm - Wikipedia

    en.wikipedia.org/wiki/Talk:Binary_logarithm

    This review is transcluded from Talk:Binary logarithm/GA1. The edit link for this section can be used to add comments to the review. Reviewer: Jfhutson (talk · contribs) 21:31, 28 December 2015 (UTC) This looks like it's probably already at GA standards. Here are my comments: lead formula: specify that x is the binary log of n.

  6. Change of base - Wikipedia

    en.wikipedia.org/wiki/Change_of_base

    In mathematics, change of base can mean any of several things: . Changing numeral bases, such as converting from base 2 to base 10 ().This is known as base conversion.; The logarithmic change-of-base formula, one of the logarithmic identities used frequently in algebra and calculus.

  7. Iterated logarithm - Wikipedia

    en.wikipedia.org/wiki/Iterated_logarithm

    In computer science, lg * is often used to indicate the binary iterated logarithm, which iterates the binary logarithm (with base ) instead of the natural logarithm (with base e). Mathematically, the iterated logarithm is well defined for any base greater than e 1 / e ≈ 1.444667 {\displaystyle e^{1/e}\approx 1.444667} , not only for base 2 ...

  8. Logarithmic number system - Wikipedia

    en.wikipedia.org/wiki/Logarithmic_number_system

    Logarithmic number systems have been independently invented and published at least three times as an alternative to fixed-point and floating-point number systems. [1] Nicholas Kingsbury and Peter Rayner introduced "logarithmic arithmetic" for digital signal processing (DSP) in 1971. [2]

  9. Common logarithm - Wikipedia

    en.wikipedia.org/wiki/Common_logarithm

    The mathematical notation for using the common logarithm is log(x), [4] log 10 (x), [5] or sometimes Log(x) with a capital L; [a] on calculators, it is printed as "log", but mathematicians usually mean natural logarithm (logarithm with base e ≈ 2.71828) rather than common logarithm when writing "log".