Precalculus (6th Edition)

Published by Pearson
ISBN 10: 013421742X
ISBN 13: 978-0-13421-742-0

Chapter 1 - Equations and Inequalities - Chapter 1 Test Prep - Review Exercises: 35

Answer

$i$

Work Step by Step

$i^{-27}=\dfrac {1}{i^{27}}=\dfrac {i}{i^{28}}=\dfrac {i}{\left( i^{4}\right) ^{7}}=\dfrac {i}{1^{7}}=i$
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