:log(value)
returns the base 10 logarithm of a value. This is the inverse function of 10^(
(84)(89) :log(value,base)
Returns the log of a certain value to a certain base. Note that this only works when you have a calculator with OS 2.53 or higher.
LocationEdit
 LOG
Examples Edit

 The above equation would give you an answer of 2, because 10^{2}=100.

 The above equation would give you an answer of 0, because 10^{0}=1 (any number to the power of zero is 1).
Change of BaseEdit
Just because only log_{10}( and ln( are the only log functions on the TI84 calculator does not mean that those are the only two bases logs can be found for. As per the change of base property of logs, if one wanted to find :

 The above equation would give you an answer of 3, because 2^{3}=8, and is equivalent to .
 If you prefer, ≈.301 and ≈.903, and =3