y'' +4y = {4, 0 <= t< 1; 0, 1 <= t} y(0) = 3 y'(0)= -2

find the inverse laplace transform of the piecewise differential equations y'' +4y = {4, 0 <= t< 1; 0, 1 <= t} y(0) = 3 y'(0)= -2