Precalculus (10th Edition)

Published by Pearson
ISBN 10: 0-32197-907-9
ISBN 13: 978-0-32197-907-0

Chapter 1 - Graphs - 2.1 Functions - 2.1 Assess Your Understanding - Page 58: 71

Answer

a. $= 3x + \sqrt x -5 $ b. $= -3x + \sqrt x +5 $ c. $=\sqrt {3x-5} $ d. $=\frac{\sqrt x}{3x-5}$

Work Step by Step

$f(x) = \sqrt x$ $g(x) = 3x-5$ a. $(f+g)(x)$ $=\sqrt x + (3x-5) $ $= 3x + \sqrt x -5 $ b. $(f-g)(x)$ $=\sqrt x -(3x-5) $ $= -3x + \sqrt x +5 $ c. $(f \cdot g)(x)$ $=\sqrt x$ $=\sqrt {3x-5} $ d. $(\frac{f}{g})(x)$ $=\frac{\sqrt x}{3x-5}$
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