![Using the Change-of-Base Formula for Logarithms: Definition & Example - Video & Lesson Transcript | Study.com Using the Change-of-Base Formula for Logarithms: Definition & Example - Video & Lesson Transcript | Study.com](https://study.com/cimages/videopreview/videopreview-full/using-the-change-of-base-formula-for-logarithms-definition-and-examples1_121565.jpg)
Using the Change-of-Base Formula for Logarithms: Definition & Example - Video & Lesson Transcript | Study.com
![SOLVED:Use the Change-of-Base Formula and a calculator to evaluate each logarithm. Round your answer to three decimal places. log3 21 SOLVED:Use the Change-of-Base Formula and a calculator to evaluate each logarithm. Round your answer to three decimal places. log3 21](https://cdn.numerade.com/previews/e7e54a48-1ffe-4bd5-97d0-fafa6e646586_large.jpg)
SOLVED:Use the Change-of-Base Formula and a calculator to evaluate each logarithm. Round your answer to three decimal places. log3 21
![SOLVED:In Exercises 15 - 22, evaluate the logarithm using the change-of-base formula. Round your result to three decimal log1/45 SOLVED:In Exercises 15 - 22, evaluate the logarithm using the change-of-base formula. Round your result to three decimal log1/45](https://cdn.numerade.com/previews/cf2a384e-d591-4663-af8f-6585d40c6c06.gif)
SOLVED:In Exercises 15 - 22, evaluate the logarithm using the change-of-base formula. Round your result to three decimal log1/45
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