In a Casio calculator, what is the base value of log 10 or e? - Quora
How to Solve Logs with any base on the Texas Instruments TI-30X iis Calculator - YouTube
Log calculation with any base on Casio fx-991EX Classwiz | Learn how to do log with any base calculation on the fastest non-programmable scientific calculator Casio fx-991EX Classwiz | By Casio Calculators