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Fourier Series of: 2sin(4000*pi*t)*sin(46000*pi*t)

  • #1

Homework Statement



How can i find the magnitude spectra of 2sin(4000*pi*t)*sin(46000*pi*t)



The Attempt at a Solution



im not sure how to go about this question, can someone please give me some help on what i should do. I know that for a square wave i can find the fourier series coefficients of it by finding the fourier transform of one period (which is the fourier transform of standard rect function) and then use Gn = f0G1(nf0). But this question im not sure if i can do this shortcut method.
please help, thanks.
 

Answers and Replies

  • #2
someone please give me some hints
 
  • #3
rude man
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Given angles x and y, what is the trigonometric identity relating the sines of these angles to the sum and difference of these angles?
 

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