Calculus: Early Transcendentals 8th Edition

Published by Cengage Learning
ISBN 10: 1285741552
ISBN 13: 978-1-28574-155-0

Chapter 12 - Section 12.3 - The Dot Product - 12.3 Exercises: 6

Answer

$a•b=-pq$

Work Step by Step

$a•b=a_{x}b_{x}+a_{y}b_{y}+a_{z}b_{z}$ $=(p)(2q)+(-p)(q)+(2p)(-q)$ $=2pq-pq-2pq$ $=-pq$
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