Logarithm - Wikipedia
The logarithm is denoted "log b x" (pronounced as "the logarithm of x to base b", "the base-b logarithm of x", or most commonly "the log, base b, of x "). An equivalent and more succinct definition is that the function log b is the inverse function to the function x ↦ b x {\displaystyle x\mapsto b^{x}} .
Logarithm - Simple English Wikipedia, the free encyclopedia
A logarithm tells what exponent (or power) is needed to make a certain number, so logarithms are one of the inverse operations of exponentiation (the other one being roots). Historically, they were useful in multiplying or dividing large numbers.
Common logarithm - Wikipedia
A graph of the common logarithm of numbers from 0.1 to 100. In mathematics, the common logarithm (aka "standard logarithm") is the logarithm with base 10. [1] It is also known as the decadic logarithm, the decimal logarithm and the Briggsian logarithm.
History of logarithms - Wikipedia
The history of logarithms is the story of a correspondence (in modern terms, a group isomorphism) between multiplication on the positive real numbers and addition on the real number line that was formalized in seventeenth century Europe and was widely used to simplify calculation until the advent of the digital computer.
Natural logarithm - Wikipedia
The natural logarithm of a number is its logarithm to the base of the mathematical constant e, which is an irrational and transcendental number approximately equal to 2.718 281 828 459. [1] The natural logarithm of x is generally written as ln x, log e x, or sometimes, if the base e is implicit, simply log x. [2] [3] Parentheses are sometimes added for clarity, giving ln(x), log e (x), …
Iterated logarithm - Wikipedia
In computer science, the iterated logarithm of , written log * (usually read "log star"), is the number of times the logarithm function must be iteratively applied before the result is less than or equal to . [1] The simplest formal definition is the result of this recurrence relation:
Introduction to Logarithms - Math is Fun
"Logarithm" is a word made up by Scottish mathematician John Napier (1550-1617), from the Greek word logos meaning "proportion, ratio or word" and arithmos meaning "number", ... which together makes "ratio-number" !
対数 - Wikipedia
対数（たいすう、英: logarithm ）とは、ある数 x を数 b の冪乗 b p として表した場合の冪指数 p である。この p は「底を b とする x の対数（英: logarithm of x to base b; base b logarithm of x ）」と呼ばれ、通常は log b x と書き表される。
Logarithms | Brilliant Math & Science Wiki
A logarithm is the inverse of the exponential function. Specifically, a logarithm is the power to which a number (the base) must be raised to produce a given number. For example, ...
Logarithm | Math Wiki - Fandom
Logarithms are algebraic concepts that complete the "exponential circle" (depicted to right), a metaphor for the three variables in a generic exponential expression. With the use of logarithms, it is possible to solve for any one variable in terms of the other two.