Answer
$\|\mathbf{v}\|=\sqrt{74}$
Work Step by Step
$\mathbf{v}=-4\mathbf{i}+3\mathbf{j}+7\mathbf{k}$ and so
$\|\mathbf{v}\|=\sqrt{(-4)^2+3^2+7^2}=\sqrt{16+9+49}=\sqrt{74}$
Calculus 10th Edition
by Larson, Ron; Edwards, Bruce H.
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 - 11.2 Exercises - Page 764: 76
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