Problem preview
F-IF.9 Warmup M3-028-A10-V01

Compare functions represented algebraically, graphically, numerically, or verbally.

Compare an exponential function and a logarithmic function to determine whether they are inverses

Problem

How do these exponential and logarithmic functions compare: \(f(x)=2^x\) and \(g(x)=\log_2(x)\)?

Big Picture

What this problem is really about

Test the inverse relationship by composing the functions in both orders on their proper domains. If each composition returns its input, the swapped domain and range, reflected points, and exchanged horizontal and vertical asymptotes should all tell the same story. Those checks are stronger than relying on the curves' appearance alone.

Inside Gozunta

Turn the preview into practice.

More than a preview

Gozunta lets you study this problem—and more than 10,000 others.

Create targeted learning sessions, use hints, check your answer, read the walkthrough, watch the video, print the work, and track your progress.

Discover Gozunta Try it now
Four variants of this problem type
Curriculum context
Course
Math III
Standard
F-IF.9
Category
Functions
Domain
Interpreting Functions
Objective
Compare functions represented algebraically, graphically, numerically, or verbally.
Problem type
Compare an exponential function and a logarithmic function to determine whether they are inverses