Log is short for logarithm.

In mathematics, the logarithm is the inverse function to exponentiation.

Therefore, we can say the logarithm of a given number x is the exponent to which another fixed number, the base b, must be raised, to produce that number x.

**Formula to calculate log.**

Lets consider the following equation.

This can also be written as;

**Example:**

Consider 2³ = 8.

In log form this can be written as;

Therefore, the log of 8 to base 2 is 3.