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Question

In each of Problems 27 through 32, solve the initial value

problem.

31.

y’’’ – y’’ + 4y’ - 4y = f(t), y(0) = y’(0) =0, y’’(0) =1,

With

f(t) = 1 for 0<= t <5

f(t) =2 for t >= 5

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