Problem 2. The sine input u = v2 sin 2t and the corresponding output of the stable linear dynamic system are shown in Fig. 1. During steady-state, they have the

same frequency, but different amplitudes (the output amplitude is 1) and phase angles. The phase delay turns out to be one eighth (1/8) of the input period. Based on this observation, determine the frequency response function value at the input frequency, in other words G(2j).