Consider the following amplitudemodulation(AM)transmission system. The input signal is푥푡=%&'+*+.We first multiply 푥(푡)by 푐표푠(4푡). That is, 푦푡=푥푡⋅푐표푠(4푡).The transmitter then transmits signal 푦(푡)through the antenna. At the receiver side, we first multiply 푦(푡)by 2푠푖푛(4푡). That is 푧(푡)=푦(푡)·2푠푖푛(4푡)and then pass 푧(푡)through a low pass filter with cutoff frequency 푊=7.5푟푎푑/푠푒푐. Denote the final output by 푤(푡)=푧(푡)*h퐿푃퐹(푡). 1.Plot the CTFT 푊(푗휔)of 푤(푡)for the range of -10<휔<10. 2.Find the expression of 푤(푡)

the equation above shows how temperature f, measured in degrees fahrenheit, relates to a temperature c, measured in degrees celsius. based on the equation, which of the following must be true?

a temperature increase of 1 degree fahrenheit is equivalent to a temperature increase of

5

9

degree celsius.

a temperature increase of 1 degree celsius is equivalent to a temperature increase of 1.8 degrees fahrenheit.

a temperature increase of

5

9

degree fahrenheit is equivalent to a temperature increase of 1 degree celsius.

a) i only

b) ii only

c) iii only

d) i and ii only

answer:

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explanation:

hes mad if he says,

explanation:

r!