why i am not getting fourier transform plot using ezplot command

syms t w

X = 1/(1+(1i.*w));

subplot(3,1,1)

ezplot(X,[-9 9]);

title('original signal');

%inverse Fourier transform

X1 =ifourier(X,t);

subplot(3,1,2)

ezplot(X1,[-5 5]);

title('inverse transform');

%Fourier Transform

X2 =fourier(X1,w);

subplot(3,1,3)

fplot(X2,[-5 5]);

title('fourier transform');

Answer 1

[Star Strider]

Since ‘X’ and ‘X2’ are purely imaginary, it is necessary to specify that in the ezplot calls. In MATLAB, imaginary values and imaginary parts of complex values do not plot.

Try this —

syms t w 
X = 1/(1+(1i.*w));

figure
subplot(3,1,1)
ezplot(imag(X),[-9 9]);
title('original signal');
%inverse Fourier transform 
X1 =ifourier(X,t);

X1 = 

subplot(3,1,2)
ezplot(X1,[-5 5]);
title('inverse transform');
%Fourier Transform 
X2 =fourier(X1,w)

X2 = 

subplot(3,1,3)
fplot(imag(X2),[-5 5]);
title('fourier transform');

.