College Algebra 7th Edition

Published by Brooks Cole
ISBN 10: 1305115546
ISBN 13: 978-1-30511-554-5

Chapter 4, Exponential and Logarithmic Functions - Section 4.5 - Exponential and Logarithmic Functions - 4.5 Exercises - Page 404: 75

Answer

$x=0.36$

Work Step by Step

To solve the given equation graphically, you have to treat each side of the equation as a function. Thus, using a graphing utility, graph the functions: $y=4^{-x}$ (blue graph) $y=\sqrt{x}$ (the red graph) (refer to the image below for the graph. The point/s where the graphs intersect are the points where $4^{-x}=\sqrt{x}$. The x-coordinates of these point are the solutions to the given equation. Note that the graphs intersect at the point $(0.364, 0.604)$. The x-coordinates of these points are $0.36$. Rounded-off to two decimal places, the solution to the given equation is: $x=0.36$.
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.