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Introduction to Logarithms. In its simplest form, a logarithm answers the question: How many of one number multiply together to make another number? Example: How many 2 s multiply together to make 8? Answer: 2 × 2 × 2 = 8, so we had to multiply 3 of the 2 s to get 8. So the logarithm is 3. How to Write it. We write it like this: log2(8) = 3.
log 2 (8) = 1 / log 8 (2) Logarithm base change rule. The base b logarithm of x is base c logarithm of x divided by the base c logarithm of b. log b (x) = log c (x) / log c (b) For example, in order to calculate log 2 (8) in calculator, we need to change the base to 10: log 2 (8) = log 10 (8) / log 10 (2) See: log base change rule. Logarithm of ...
In mathematics, the logarithm to base b is the inverse function of exponentiation with base b. That means that the logarithm of a number x to the base b is the exponent to which b must be raised to produce x. For example, since 1000 = 103, the logarithm base of 1000 is 3, or log10 (1000) = 3.
Some Important Properties of Logarithm. The following properties of logarithm help us to solve problems easier. Logb(b) = 1. This property is very easy to understand.
Definition. Common logarithms. The three laws of logarithms. W HEN WE ARE GIVEN the base 2, for example, and exponent 3, then we can evaluate 2 3. 2 3 = 8. Inversely, if we are given the base 2 and its power 8 -- 2? = 8. -- then what is the exponent that will produce 8? That exponent is called a logarithm.
4 Αυγ 2024 · Logarithm is a mathematical function that represents the exponent to which a fixed number, known as the base, must be raised to produce a given number. In other words, it is the inverse operation of exponentiation.
logarithm, the exponent or power to which a base must be raised to yield a given number. Expressed mathematically, x is the logarithm of n to the base b if bx = n, in which case one writes x = log b n. For example, 2 3 = 8; therefore, 3 is the logarithm of 8 to base 2, or 3 = log 2 8. In the same fashion, since 10 2 = 100, then 2 = log 10 100.
