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3.7 Figure 3.35(b) shows the waveform of an amplitude-modulated signal as displayed on an oscilloscope screen. The carrier is sinusoidal, but the message signal

3.7 Figure 3.35(b) shows the waveform of an amplitude-modulated signal as displayed on an oscilloscope screen. The carrier is sinusoidal, but the message signal is a periodic triangular waveform. Find the modulation index and the power efficiency of the amplitude-modulated signal. (b) -2

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