Use laplace transforms to solve the ivp

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Reference no: EM13870137

a)Use Laplace transforms to solve the IVP:

y'' + 4y = 0, y(0) = 1, y'(0) = -1

b)Find the Laplace of e^(2t)cos(3t).

c)Find the Laplace of u(t - π) cos(t - π).

Reference no: EM13870137

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