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On observe ci-dessous le spectre d’un signal périodique.
Quel signal temporel a produit ce spectre via la FFT ?
cos(2*pi*30*t)*sin(2*pi*10*t)^2
cos(2*pi*10*t)*sin(2*pi*50*t)^2
sin(2*pi*30*t)^3
cos(2*pi*10*t)*sin(2*pi*30*t)*cos(2*pi*50*t)
cos(2*pi*10*t)+sin(2*pi*30*t)+cos(2*pi*50*t)
cos(2*pi*50*t)*sin(2*pi*10*t)^2
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