Elementary Algebra

Published by Cengage Learning
ISBN 10: 1285194055
ISBN 13: 978-1-28519-405-9

Chapter 11 - Additional Topics - Chapter 11 Review Problem Set: 73


The domain of this function is $\text{all real numbers}$.

Work Step by Step

When this question asks for the domain of the function, it is asking for the values of x that can be legally substituted into the function. (For instance, in the function $\frac{3}{x}$, $x≠0$ because this would make the denominator of the fraction equal to 0, making the function at that value be undefined.) In the case of the function $y=x^2+4$, we can substitute any value of $x$ into the function and still get a valid $y$ value. Therefore, the domain of this function is $\text{all real numbers}$.
Update this answer!

You can help us out by revising, improving and updating this answer.

Update this answer

After you claim an answer you’ll have 24 hours to send in a draft. An editor will review the submission and either publish your submission or provide feedback.