Answer
$-4.5 \vec{i}+8\vec{j}+0.5 \vec{k}$
Work Step by Step
We simplify: $-4[\vec{i}- 2\vec{j})-0.5(\vec{i}-\vec{k})]=-4i+8j -0.5 i+0.5 k \\=-4.5 \vec{i}+8\vec{j}+0.5 \vec{k}$
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: 11
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