Answer
-4
Work Step by Step
If $f(x) =2x^2-1$, then $f'(x) = 4x$
$f'(-1) = 4 \times (-1) = -4$
Precalculus: Mathematics for Calculus, 7th Edition
by Stewart, James; Redlin, Lothar; Watson, Saleem
Published by
Brooks Cole
ISBN 10:
1305071751
ISBN 13:
978-1-30507-175-9
Chapter 13 - Review - Exercises - Page 942: 22
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