Question: Solve the following initial - value problem using Laplace Transforms: x ' ' + 4 x = f ( t ) ; x ( 0

Solve the following initial-value problem using Laplace Transforms:
x''+4x=f(t);x(0)=x'(0)=0,
f(t)={cos2tif0t2
0ift2
You may use technology to help but must show work for how you got to the technology parts. (Hint: L-1{s(s2+4)2}=14tsin2t.)
Solve the following initial - value problem using

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