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Learn about the properties of logarithms that help us rewrite logarithmic expressions, and about the change of base rule that allows us to evaluate any logarithm we want using the calculator.
- Intro to Logarithms
Sal explains what logarithms are and gives a few examples of...
- Logarithms
Learn algebra with Khan Academy's interactive lessons and...
- Evaluating logarithms (advanced) (video)
Sal evaluates log₂ (8), log₈ (2), log₂ (⅛), and log₈ (½)....
- Intro to Logarithms
Sal explains what logarithms are and gives a few examples of finding logarithms.
20 Δεκ 2012 · Learning that logarithms are just a way of expressing "the exponent that you have to raise a base to to get another number" Practice this lesson yourself on KhanAcademy.org right now:...
Learn algebra with Khan Academy's interactive lessons and practice problems.
We do not have currently have answer keys available for the practice problems. However, while the students are doing the practice problems, they can use the Hint feature for missed questions to view a step-by-step solution to the problem.
Sal evaluates log₂ (8), log₈ (2), log₂ (⅛), and log₈ (½). Created by Sal Khan. Want to join the conversation? Let's give ourselves a little bit more practice with logarithms. So just as a little bit of review, let's evaluate log base 2 of 8. What does this evaluate to?
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