Use the Laplace transform to solve the given initial-value problem. y(t) = y" + y = f(t), y(0) = 0, y'(0) = 1, where f(t) = sin(t) cos(t) X 0, 0 st < 1. st< 2π t = 2π 0, )u(± ñ) ) 2 (² - π) + ( |)u(± − 2n t-

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