Consider the following initial-value problem. y″ + 4y = cos(2t),    y(0) = 3,    y ′(0) = 5

Advanced Engineering Mathematics
10th Edition
ISBN:9780470458365
Author:Erwin Kreyszig
Publisher:Erwin Kreyszig
Chapter2: Second-order Linear Odes
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Consider the following initial-value problem.
y″ + 4y = cos(2t),    y(0) = 3,    y ′(0) = 5
Take the Laplace transform of the differential equation and solve for 
ℒ{y}.
 (Write your answer as a function of s.)
ℒ{y} = 
4s3+3s2+17s+12(s2+4)2​
 
 
 
Use the Laplace transform to solve the given initial-value problem. Use the table of Laplace transforms as needed.
y(t) = 
4cos(2t)+32​sin(2t)+tsin(2t)4​
 
 
 
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