Answer
$$\langle 0,2,1\rangle.$$
Work Step by Step
We have $$ u=\overrightarrow{ PR}=R-P=(1,4,3)-(1,2,2)=\langle 0,2,1\rangle.$$
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 - 13.2 Vectors in Three Dimensions - Exercises - Page 659: 12
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