Answer
$-9$
Work Step by Step
$$ v\cdot w=\langle 1,3,-2 \rangle\cdot \langle 2,-1,4 \rangle=2-3-8=-9.$$
Calculus (3rd Edition)
by Rogawski, Jon; Adams, Colin
Published by
W. H. Freeman
ISBN 10:
1464125260
ISBN 13:
978-1-46412-526-3
Chapter 13 - Vector Geometry - Chapter Review Exercises - Page 702: 21
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