Differential Equations and Linear Algebra (4th Edition)

Published by Pearson
ISBN 10: 0-32196-467-5
ISBN 13: 978-0-32196-467-0

Chapter 3 - Determinants - 3.1 The Definition of the Determinant - Problems - Page 206: 2


$4$, even

Work Step by Step

The ordered pairs that are out of order are: $(2,1),(3,2),(4,1),(3,1)$, thus the number of inversions is $4$ and the parity is even.
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