A logarithm is defined as the power to which number must be raised to get some other values. It is the most convenient way to express large numbers. A logarithm has various important properties that prove multiplication and division of logarithms can also be written in the form of logarithm of addition and subtraction. We all study this topic in class XI, all of us also get information about basic integration, so all of us start getting basic knowledge in Math from class XI, so we need that all of us People read their math well and get good knowledge. A logarithm of a number with a base is equal to another number. A logarithm is just the opposite function of exponentiation. For example, if 102 = 100 then log10 100 = 2.