This website uses cookies to ensure you get the best experience. The number b b is called the base. If xz y then z is the answer to the log of y with base x ie log x y z In other words x needs to be raised to the power z to produce y.
The antilog of the resultant figure will give us the answer.
Lg100lg2 2 030103 6644. Lets say we had the log base 2. How to use the table Part 2. We learn how to calculate logarithms of decimals and fractions as well as how to deal with cases for which the input value isnt an obvious power of the base.