Algebra 2: Resources and Extra Practice - 5.02 Logarithmic Functions

Algebra 2: Resources and Extra Practice

5.02 Logarithmic Functions

Essential Question:

How are exponential functions related to logarithmic functions?
The base change property can help in what type of scenarios?
How can logarithms be used to solve exponential equations?

Lesson 5.02 Video - If the video does not load correctly, Click Here to watch.

Khan Academy Resources

Relationship between exponentials & logarithms: graphsGiven a few points on the graph of an exponential function, Sal plots the corresponding points on the graph of the corresponding logarithmic function.

Relationship between exponentials & logarithmsSal rewrites 100=10^2 as a logarithmic equation and log_5(1/125)=-3 as an exponential equation.

Evaluating logarithms (advanced)Sal evaluates log₂(8), log₈(2), log₂(⅛), and log₈(½).

Evaluating logarithms: change of base ruleSal approximates log₅(100) by rewriting it as log(100)/log(5) using the change of base rule, then evaluates with a calculator.

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