Precalculus: Mathematics for Calculus, 7th Edition

Published by Brooks Cole
ISBN 10: 1305071751
ISBN 13: 978-1-30507-175-9

Chapter 9 - Section 9.4 - Vectors in Three Dimensions - 9.4 Exercises - Page 658: 24

Answer

$<3, -2, -15>$ $3i - 2j - 15k$

Work Step by Step

The question asks to find the vector $-2u + 3v$ in component form and in terms of i, j, and k Given $u = <3, 1, 0>$ and $v = <3, 0, -5>$ $-2u + 3v = -2<3, 1, 0> + 3<3, 0, -5>$ $ = <3, -2, -15>$ You can convert component form directly into the terms of i, j, and k: $<3, -2, -15> = 3i - 2j - 15k$
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