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Proving Two Functions are Inverses - Problem 4

Teacher/Instructor Alissa Fong
Alissa Fong

MA, Stanford University
Teaching in the San Francisco Bay Area

Alissa is currently a teacher in the San Francisco Bay Area and Brightstorm users love her clear, concise explanations of tough concepts

Recall that two functions f and g are inverses if and only if f(g(x)) = g(f(x)) = x . Here we use this definition to verify that pairs of logarithmic and exponential functions are inverses. If you have access to a grapher, you could double-check this work by verifying that the graphs of the two functions are reflected across the line y = x.

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