Answer
$$\sqrt{6}$$
Work Step by Step
Using the formula for magnitude, we find:
$$\sqrt{1^2+\left(-1\right)^2+2^2} \\ \sqrt{6}$$
Functions Modeling Change: A Preparation for Calculus, 5th Edition
by Connally, Eric; Hughes-Hallett, Deborah; Gleason, Andrew M.; Cheifetz, Phil C.
Published by
Wiley
ISBN 10:
1118583191
ISBN 13:
978-1-11858-319-7
Chapter 12 - Vectors and Matrices - 12.2 The Components of a Vector - Exercises and Problems for Section 12.2 - Exercises and Problems - Page 508: 10
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