OML Search

Properties or Rules of Logarithms

Related Topics:
More Lessons for Grade 9

Math Worksheets

Videos, worksheets, games and activities to help Algebra students learn about the properties or rules of logarithms.

Product Property
\[{\log _b}\left( {xy} \right) = {\log _b}x + {\log _b}y\]

Quotient Property
\[{\log _b}\left( {\frac{x}{y}} \right) = {\log _b}x - {\log _b}y\]

Power Property
\[{\log _b}\left( {{x^n}} \right) = n{\log _b}x\]

Change of Base Property
\[{\log _b}x = \frac{{{{\log }_a}x}}{{{{\log }_a}b}}\]

Properties of Logarithms
Introduction to logarithm properties

Introduction to logarithm properties (part 2)
Properties of Logarithms
This video explains three properties of logarithms and the Change of Base formula.
The product property is that the sum of two logarithms of the same base is equal to the log of the product of those two numbers.
The quotient property of logarithms is that the difference of two logarithms of the same base is equal to the logarithm of the quotient of those two numbers.
If you have the logarithm of a number that has an exponent that exponent can be taken out and multiplied times the logarithm to make it an equivalent expression.
The Change of Base formula is useful in determining values of logarithms with a base different than 10 .


Rotate to landscape screen format on a mobile phone or small tablet to use the Mathway widget, a free math problem solver that answers your questions with step-by-step explanations.

You can use the free Mathway calculator and problem solver below to practice Algebra or other math topics. Try the given examples, or type in your own problem and check your answer with the step-by-step explanations.

OML Search

We welcome your feedback, comments and questions about this site or page. Please submit your feedback or enquiries via our Feedback page.

[?] Subscribe To This Site

follow us in feedly
Add to My Yahoo!
Add to My MSN
Subscribe with Bloglines