Answer
\begin{aligned}
&\frac{f(x)-f(a)}{x-a}\\
&\frac{f(a+h)-f(a)}{h}
\end{aligned}
Work Step by Step
The two ways of writing the difference quotient are
\begin{aligned}
&\frac{f(x)-f(a)}{x-a}\\
&\frac{f(a+h)-f(a)}{h}
\end{aligned}
Calculus (3rd Edition)
by Rogawski, Jon; Adams, Colin
Published by
W. H. Freeman
ISBN 10:
1464125260
ISBN 13:
978-1-46412-526-3
Chapter 3 - Differentiation - 3.1 Definition of the Derivative - Preliminary Questions - Page 102: 2
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