Answer
$\bf {False}$
Work Step by Step
$y=\dfrac{a}{1+be^{-rx}}$
When $b$ is positive, $be^{-rx}$ is always positive.
The denominator can never be zero.
Therefore, the domain will be the set of real numbers.
Thus, the statement is false.
Algebra and Trigonometry 10th Edition
by Larson, Ron
Published by
Cengage Learning
ISBN 10:
9781337271172
ISBN 13:
978-1-33727-117-2
Chapter 5 - 5.5 - Exponential and Logarithmic Models - 5.5 Exercises - Page 409: 61
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