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Range of a Logarithmic Function

The range of a basic logarithmic function y=logaxy = \log_a x encompasses the complete set of all real numbers. Because the curve of the graph extends infinitely downward and upward without any vertical restrictions, its output values span all possible numbers. In mathematical interval notation, this range is formally written as (,)(-\infty, \infty).

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Updated 2026-05-25

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Intermediate Algebra @ OpenStax

Ch.10 Exponential and Logarithmic Functions - Intermediate Algebra @ OpenStax

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