Void UseBaseAndArg double argB double argX Evaluate logBX 1 logXB. A logarithm is the power to which a number is raised to get another number. For example the base 10 logarithm of 100 is the number of times youd have to multiply 10 by itself to get 100.
Logarithms are the opposite of exponentials just as subtraction is the opposite of addition and division is the opposite of multiplication.
2 3 8 log 2 8 3. Most scientific calculators only calculate logarithms in base 10 written as log x for common logarithm and base e written as ln x for natural logarithm the reason why the letters l and n are. Log 10 2 8 8 log 10 2 Derivative of natural logarithm. Generalizing the examples above leads us to the formal definition of a logarithm.