Goes into detail standard logarithm rules Purple Math: Basic Log Rules log rules log rules Basic Log Rules standard logarithm rules logarithmic Basic Log Rules & Expanding Log Expressions | … http://www.purplemath.com/modules/logrules.htm http://www.purplemath.com/modules/logrules.htm Basic Logarithmic Properties log rules log rules Basic Logarithmic Properties http://www.purplemath.com/modules/logrules.htm