Functions Modeling Change: A Preparation for Calculus, 5th Edition

by Connally, Eric; Hughes-Hallett, Deborah; Gleason, Andrew M.; Cheifetz, Phil C.

Published by Wiley

ISBN 10: 1118583191

ISBN 13: 978-1-11858-319-7

Chapter 12 - Vectors and Matrices - Review Exercises and Problems for Chapter Twelve - Page 532: 14

Answer

-1

Work Step by Step

Using the dot product, which tells us to multiply corresponding components and to then add, we find: $$1\cdot \left(-2\right)+3\cdot \:3+\left(-2\right)\cdot \:4 \\ -1$$

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