Precalculus (6th Edition) Blitzer

Published by Pearson
ISBN 10: 0-13446-914-3
ISBN 13: 978-0-13446-914-0

Chapter 1 - Section 1.2 - Basics of Functions and Their Graphs - Exercise Set - Page 180: 112


$f(x)$ means $f$ of $x$ or the value of the function $f$ at $x$.

Work Step by Step

$f(x)$ does not mean $f$ times $x$. $f(x)$ means $f$ of $x$ -- the value of a function $f$ at $x$. For example: $f(x) = x+2$. $f(2)$ means the value of the function when x = 2. So $f(2) = 2+2 \\f(2) = 4.$
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