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SpartanArt
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Homework Statement
solve the following initial value problem using Laplace transforms
y"+2y'+y=(8/3)cos(2t)-2sin(2t)
y(0)=1
y'(0)=7/3
Homework Equations
L[d^2y/dt^2]=s^2Y-sy(0)-y'(0)
L[dy/dt]=sY-y(0)
L[coswt]=s/(s^2+w^2)
L[sinwt]=w/(s^2+w^2)
The Attempt at a Solution
so far: Y={s^3+(13/3)s^2+(20/3)s+(40/3)}/{(s^2+4)(s^2+2s+1)}
need help turning denominator into partial fraction.
Thanks!