This is what i currently have an=0 a0=0 bn= look below can someone solve c and d

Question

This is what i currently have an=0 a0=0 bn= look below

can someone solve c and d, b works fine

b) Using the Fourier coefficients that you determined from a), plot x(t) in MATALB that considers 4·Note: you should the first 40 terms in the Fourier series if T= 4 seconds. Plot x(t) for-4 not simply enter term by term in MATLAB to complete the plot] t x(t) -2T 2T -1 c) Based on the Fourier coefficients that you determined from a), if T= 2 seconds, plot both the magnitude spectrum and phase spectrum of x(t) as a function of n for -10 3n

Explanation / Answer

Matlab code :

clear ,

close all;

Fs=60;

t=0:1/Fs:20-1/Fs;

y=square(t,50);

y(y>0)=2;

y(y<0)=-12;

figure, plot(t,y);

axis ([0 20 -20 10])

% Fourier Series

a0=0;

Fy=zeros(size(t));

N=10;

for n=1:2:N

Fy=Fy+(4/n*pi)*sin(2*pi*n*t/(2*pi));

end

hold on,

plot(t,Fy,'r')

legend(' Square ','Fourier Approx');

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