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Logarithms - Change of Base Rule

Videos, worksheets, games and acivities to help Algebra students learn about the change of base rule in logarithms.

Change of Base Formula : When we encounter logarithms with bases not of the common or natural logarithm, we often need the change of base formula. The change of base formula allows us to convert a logarithm from one base to another. By using the change of base formula, we can change a logarithmic term to allow us to input it into a calculator. Most calculators only accept logarithms of base 10 or base e.

Change the base of Logarithm

Change of Base Formula
The Change of Base Formula for logarithms, including the proof.

Change of base formula
A discussion and the derivation of the formula for changing the base of logarithms.

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