What's the general solution to the following second order differential equation if A and B are constants? Why? y" +9y=0
What's the general solution to the following second order differential equation if A and B are constants? Why? y" +9y=0
Advanced Engineering Mathematics
10th Edition
ISBN:9780470458365
Author:Erwin Kreyszig
Publisher:Erwin Kreyszig
Chapter2: Second-order Linear Odes
Section: Chapter Questions
Problem 1RQ
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Expert Solution
Step 1: Given equation
Consider given differential equation,
y"+9y = 0
Associated auxiliary equation is
m ^2 + 9 = 0
ie m ^2 = -9
m = 3i , -3i
Therefore auxillary equation has complex roots.
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