Elementary Linear Algebra 7th Edition

Published by Cengage Learning
ISBN 10: 1-13311-087-8
ISBN 13: 978-1-13311-087-3

Chapter 5 - Inner Product Spaces - 5.1 Length and Dot Product in Rn - 5.1 Exercises: 17

Answer

Distance $=\sqrt {8}$ units.

Work Step by Step

Distance $=\sqrt {(1-(-1))^{2}+(-1-1)^{2}}$ $=\sqrt {2^{2}+2^{2}}$ $=\sqrt {8}$ units.
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