Answer
$-1$
Work Step by Step
Applying Euler's equation to $e^{i\pi}$ yields $cos(\pi) + isin(\pi)$
$cos(\pi) = -1, isin(\pi) = 0$
$-1$
Elementary Differential Equations and Boundary Value Problems 9th Edition
by Boyce, William E.; DiPrima, Richard C.
Published by
Wiley
ISBN 10:
0-47038-334-8
ISBN 13:
978-0-47038-334-6
Chapter 3 - Second Order Linear Equations - 3.3 Complex Roots of the Characteristic Equation - Problems - Page 163: 3
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