To compute that, just raise 5 to the power of 2, resulting in: 5 2 = 5 x 5 = 25. In another example, take the antilog of 2 with a base of 5. For example, to calculate the inverse log function of log 103 (antilog of 3 with a base of 10), just solve 10 3 = 10 x 10 x 10 = 1000. To find the antilog of a given log number with a given base, simply raise the base to that number by performing exponentiation. Thus antilog(64) = 2 6 when using a base of 2. The purpose of the antilog operation is to convert a log number (a number on a logarithmic scale) back to its original value.Ī strict definition for the antilog function is: f(x) = b x, which is exactly the inverse of log b(x).įor example, the inverse logarithm of log 264 is 2 6 since 2 x 2 x 2 x 2 x 2 x 2 = 64. It is exactly the same as exponentiation, that is - to raise a number to a given power. Practical applications of the antilog functionĪn antilogarithm, also called inverse logarithm, is the inverse of the logarithm operation.
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