Answer
$0$
Work Step by Step
We have
$$\int_2^9f'(x)dx=f(x)|_2^9=f(9)-f(2)=4-4=0.$$
Calculus (3rd Edition)
by Rogawski, Jon; Adams, Colin
Published by
W. H. Freeman
ISBN 10:
1464125260
ISBN 13:
978-1-46412-526-3
Chapter 5 - The Integral - 5.4 The Fundamental Theorem of Calculus, Part I - Preliminary Questions - Page 257: 4
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