Answer
The vector $\mathbf{j}$ is the standard notation to represent the unit vector in the direction of the positive y-axis.
Work Step by Step
Given above.
Precalculus (6th Edition) Blitzer
by Blitzer, Robert F.
Published by
Pearson
ISBN 10:
0-13446-914-3
ISBN 13:
978-0-13446-914-0
Chapter 6 - Section 6.6 - Vectors - Exercise Set - Page 784: 92
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