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DerKrebs [107]
3 years ago
8

Select the correct equation that represents an am signal.

Mathematics
1 answer:
ch4aika [34]3 years ago
8 0

The first choice,

... a. s(t) = ac[1 + μam cos (2πfmt)] cos (2πfct)

has the carrier frequency cos(2πfct) amplitude modulated by the message signal.

The other expressions represent frequency and phase modulation of various kinds.

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Answer:

C

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Since this is an indererminate form, use L'Hopital

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7 0
2 years ago
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