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Fourier Series approximation to a square wave, t=-1.5:0.01:1.5; wo=4, E=1; * Square Wave approximation with 10 harmonics N=10; xN=0; for n=1:1 an=(E/ (n*pi))*(sin (n*pi/2)-sin (n*3*pi/2)) XN=xN+an. *COS (n*Wo*t); end * i…