Logs to the base e are often call natural logs.Īre now both fairly standard on most calculators. Logs to the base 10 are often call common logs, whereas However, two choices are most usual: 10 and The formal definition is repeated below, this time with restrictions.Īs noted above, the base can be any positive number (except 1). Just as subtraction is the inverse operation of addition,Īnd taking a square root is the inverse operation of squaring,Įxponentiation and logarithms are inverse operations.įinding an antilog is the inverse operation of finding a log, Note, the above is not a definition, merely a pithy description. Homework The Definition of a Logarithm A logarithm is an exponent.Logarithmic Properties Back to the Table of Contents Numbers and their Application - Lesson 17 Logarithmic Properties Lesson Overview
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