Near enough the exact value of the number. Logarithms, for positive numbers, have are invertible.
mantissa
27.9 IS a decimal number. You can tell it is a decimal number because it has a decimal point (.).
A logarithm is the exponent to which a number called a base is raised to become a different specific number. A common logarithm uses 10 as the base and a natural logarithm uses the number e (approximately 2.71828) as the base.
When a decimal can't be expressed as a fraction then it is an irrational number.
That is a logarithm to the base "e", where "e" is a number that is approximately 2.718.
A number for which a given logarithm stands is the result that the logarithm function yields when applied to a specific base and value. For example, in the equation log(base 2) 8 = 3, the number for which the logarithm stands is 8.
It tells you the value (and sign) of the number.
The decimal part of a logarithm, as distinguished from the integral part, or characteristic.
An antilogarithm is the number of which the given number is the logarithm (to a given base). If x is the logarithm of y, then y is the antilogarithm of x.
Usually, but not necessarily. A logarithm that is not an integer-value is irrational. For example log10100 = 2 which is a rational number. log1012 = 1.0791812460476... which is an irrational number.
The "base of the natural logarithm" is the number known as "e". It is approximately 2.718.
maths