Elementary Linear Algebra 7th Edition

by Larson, Ron

Published by Cengage Learning

ISBN 10: 1-13311-087-8

ISBN 13: 978-1-13311-087-3

Chapter 3 - Determinants - 3.2 Determinants and Elementary Operations - 3.2 Exercises - Page 119: 39

Answer

$$k$$

Work Step by Step

Since the matrix is triangular and it is easy to see that its determinant is $$(1)(k)(1)=k.$$

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