Change of Base Formula for Logarithms

The change of base formula for logarithms is a mathematical identity that allows us to evaluate logarithms on a calculator by changing them from one base to another. If the calculator does not have a function for a certain base, we can use this formula to change it to a base that the calculator can handle. The formula states that the logarithm of a number A with base b is equal to the division of the logarithm of A with base c by the logarithm of b also with base c. This formula is particularly useful in computer science and other fields where logarithms of base 2 are commonly used.