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Consider DSB-LC AM s(t)=(A+m(t))cos(2πfc​t) with message signal m(t)=acos(2πbt)+2acos(4πbt)
(a) Determine a formula for the DSB-LC bandwidth.
(b) Determine a formula for the DSB-LC power.
(c) Determine a formula for the power efficiency.
(d) If the modulation index is 0.8, determine a formula for A.
(e) Determine the resulting power efficiency for the value of A in part (d).

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