A high-quality oscillatory circuit is under the influence of an external amplitude-modulated EMF, varying according to the law E(t) = A(1 + mcos2Wt)cosw0t. The resonant frequency of the circuit can be tuned by changing the capacitance. Assuming the circuit damping coefficient d is given, determine the amplitude of forced oscillations in the following cases: a) the circuit is tuned to the carrier frequency w0; b) the circuit is tuned to the frequency w0 + 2W.

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