Use the Laplace transform to solve the following IVP
y′′ +2y′ +2y=δ(t−5) ,y(0)=1,y′(0)=2,
where δ(t) is the Dirac delta function.
Taking the Laplace on the LHS,
We know,
So the equation becomes,
Substituting the initial values,
y'(0)=2 and y(0)=1,
Laplace of RHS,
Now,
So,
By splitting,
where, H is the Heaviside step function and
So,
thus,
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