Precalculus: Mathematics for Calculus, 7th Edition

Published by Brooks Cole
ISBN 10: 1305071751
ISBN 13: 978-1-30507-175-9

Chapter 13 - Section 13.3 - Tangent Lines and Derivatives - 13.3 Exercises - Page 922: 20

Answer

-5

Work Step by Step

If $f(x) =2-3x+x^2$, then $f'(x) = -3+2x$ $f'(-1) = -3+2\times (-1) = -5$
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