Question: An AM modulator operates with the message signal m ( t ) = 1 0 c o s ( 4 0 t ) + 2

An AM modulator operates with the message signal m(t)=10cos(40t)+20cos(80t). The carrier is C(t)=100cos[2106t], and the DSB-C AM operates with a modulation index of 12.
(1) Write mn(t), the normalized signal of m(t) with a minimum value of -1.
(2) Determine the power efficiency of the modulator.
An AM modulator operates with the message signal

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