**Log rules: Justifying the logarithm properties (article) - Khan Academy**
https://www.khanacademy.org/math/algebra2/x2ec2f6f830c9fb89:logs/x2ec2f6f830c9fb89:log-prop/a/justifying-the-logarithm-properties

WebStudy the proofs of the logarithm properties: the product rule, the quotient rule, and the power rule. In this lesson, we will prove three logarithm properties: the product rule, the quotient rule, and the power rule. Before we begin, let's recall a useful fact that will help us along the way. log b ( b c) = c.

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