Communication Theory (Electrical Engineering)

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Homework Statement



Sketch the single-side and double-sided amplitude and phase spectra of


Homework Equations


a) Xa(t)=5cos(12∏t-pi/6)

b)Xc(t)=4cos(8∏t)cos(12∏t)


The Attempt at a Solution


I have no idea how to start off this problem
 

Answers and Replies

  • #2
berkeman
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Homework Statement



Sketch the single-side and double-sided amplitude and phase spectra of


Homework Equations


a) Xa(t)=5cos(12∏t-pi/6)

b)Xc(t)=4cos(8∏t)cos(12∏t)


The Attempt at a Solution


I have no idea how to start off this problem

Welcome to the PF.

Tell us what you have learned so far about amplitude and phase spectra...
 

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