Logarithms in base 10 (common logarithm) and e (natural logarithm) can be calculated directly using the keyboard. However if someone wants to calculate a logarithm in any other base, he has to convert this logarithm to a logarithm in base 10 using the following equation:
logba = log a / log b
(logba is the log of a in base b and log a is the log of a in base 10.)
The correctness or validity of this equation can be verified simply. In this way then it is possible to calculate the logarithm of a number to any base with Casio’s scientific/graphical calculators. |
