How do you use the Change of Base Formula and a calculator to evaluate the logarithm log28? Precalculus Properties of Logarithmic Functions Functions with Base b 1 Answer Konstantinos Michailidis Sep 13, 2015 Like that log28=log8log2=log23log2=3 Answer link Related questions What is the exponential form of logb35=3? What is the product rule of logarithms? What is the quotient rule of logarithms? What is the exponent rule of logarithms? What is logb1? What are some identity rules for logarithms? What is logbbx? What is the reciprocal of logba? What does a logarithmic function look like? How do I graph logarithmic functions on a TI-84? See all questions in Functions with Base b Impact of this question 1419 views around the world You can reuse this answer Creative Commons License