Calculus 10th Edition

Published by Brooks Cole
ISBN 10: 1-28505-709-0
ISBN 13: 978-1-28505-709-5

Chapter 11 - Vectors and the Geometry of Space - 11.1 Exercises - Page 755: 47

Answer

$\lt\frac{-5}{\sqrt 5},\frac{10}{\sqrt 5}\gt$

Work Step by Step

First find the magnitude of vector v. Then divide vector v by its magnitude to get the unit vector. Then multiply this unit vector by 5 to get a vector of magnitude 5 in the direction of u. See attached photo.
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