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logarithm. A logarithm is a mathematical operation that determines how many times a certain number called the base is multiplied by itself to reach another number. Logarithm Rules The base b logarithm of a number is the exponent that we need to raise the base in order to get the number.
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Expressed mathematically x is the logarithm of n to the base b if bx n in which case one writes x log b n. The word logarithm was invented by John Napier in 1614. They are related to exponential functions.
For example the base ten logarithm of 100 is 2 because.
A logarithm is a mathematical operation that determines how many times a certain number called the base is multiplied by itself to reach another 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. Adding or taking away logarithms can replace multiplying or dividing large numbers. Therefore 3 is the logarithm of 8 to base 2 or 3 log 2 8.
