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  2. Natural logarithm - Wikipedia

    en.wikipedia.org/wiki/Natural_logarithm

    The natural logarithm of e itself, ln e, is 1, because e 1 = e, while the natural logarithm of 1 is 0, since e 0 = 1. The natural logarithm can be defined for any positive real number a as the area under the curve y = 1/x from 1 to a [4] (with the area being negative when 0 < a < 1). The simplicity of this definition, which is matched in many ...

  3. List of logarithmic identities - Wikipedia

    en.wikipedia.org/wiki/List_of_logarithmic_identities

    ln(r) is the standard natural logarithm of the real number r. Arg(z) is the principal value of the arg function; its value is restricted to (−π, π]. It can be computed using Arg(x + iy) = atan2(y, x). Log(z) is the principal value of the complex logarithm function and has imaginary part in the range (−π, π].

  4. Index of logarithm articles - Wikipedia

    en.wikipedia.org/wiki/Index_of_logarithm_articles

    Download as PDF; Printable version; ... List of integrals of logarithmic functions; Logarithmic growth; ... Natural logarithm of 2; Neper;

  5. Logarithmic - Wikipedia

    en.wikipedia.org/wiki/Logarithmic

    Logarithmic can refer to: Logarithm, a transcendental function in mathematics; Logarithmic scale, the use of the logarithmic function to describe measurements; Logarithmic spiral, Logarithmic growth; Logarithmic distribution, a discrete probability distribution; Natural logarithm

  6. Logarithmic integral function - Wikipedia

    en.wikipedia.org/wiki/Logarithmic_integral_function

    In mathematics, the logarithmic integral function or integral logarithm li(x) is a special function. It is relevant in problems of physics and has number theoretic significance. In particular, according to the prime number theorem , it is a very good approximation to the prime-counting function , which is defined as the number of prime numbers ...

  7. Log-normal distribution - Wikipedia

    en.wikipedia.org/wiki/Log-normal_distribution

    Download QR code; Print/export ... method to estimate the cumulative distribution function, the pdf and the ... is determined by the base of natural logarithm, ...

  8. Logarithm - Wikipedia

    en.wikipedia.org/wiki/Logarithm

    The relation that the logarithm provides between a geometric progression in its argument and an arithmetic progression of values, prompted A. A. de Sarasa to make the connection of Saint-Vincent's quadrature and the tradition of logarithms in prosthaphaeresis, leading to the term "hyperbolic logarithm", a synonym for natural logarithm. Soon the ...

  9. Log amplifier - Wikipedia

    en.wikipedia.org/wiki/Log_amplifier

    A log amplifier, which may spell log as logarithmic or logarithm and which may abbreviate amplifier as amp or be termed as a converter, is an electronic amplifier that for some range of input voltage has an output voltage approximately proportional to the logarithm of the input: