Precalculus (6th Edition)

Published by Pearson
ISBN 10: 013421742X
ISBN 13: 978-0-13421-742-0

Chapter 8 - Application of Trigonometry - 8.4 Algebraically Defined Vectors and the Dot Product - 8.4 Exercises - Page 790: 37

Answer

$< 8,-20 > $

Work Step by Step

$-4u=-4\left( < -2,5 > \right) = < \left( \left( -2\right) \times \left( -4\right) \right) ,\left( 5\times \left( -4\right) \right) > = < 8,-20 > $
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