Solve the IVP y('') - 2y(') + 2y = u(t-1)cos(2(t-1)), y(0) = 1, y(')(0) = 0
a) y(t) = cos(2t)
b) y(t) = sin(2t)
c) y(t) = e(-t)cos(2t)
d) y(t) = e(-t)sin(2t)