Solve Ex.4-2 Can you please show me the output of MAtLab on a nice way Thank you

Question

Solve Ex.4-2 Can you please show me the output of MAtLab on a nice way Thank you very much Can you please show me the output of MAtLab on a nice way Thank you very much Computer Exercises 4-1. Obtain the symbolic Fourier transforms of the following: (a) x,(t) = exp(-r) (b) x2) texp(-) (c) x,(t) = (e-ne-z)u(t) Check your results with Table 4-2 and by performing inverse symbolic Fourier transfoms show that the original signal results in each case 4-2. (a) Compute and plot the ampliude and phase spectra of the signals given in Computer Bie cise 4-1 (b) Compute and plot the energy spectra of the signals given in Computer Exercise 4-1.

Explanation / Answer

First obtain the fourier transforms of all signals.

>> syms t,w
>> x1=exp(-t^2);
>> x2=t*x1;
>> x3=exp(-3*t)+exp(-2*t);
>> f1=fourier(x1)
>> f2=fourier(x2)
>> f3=fourier(x3)
%now plot the phase and magnitude spectrum.%
>>plot(w,abs(f1)) % gives the magnitude spectrum%
>>plot(w,angle(f1)) %gives the phase spectrum%
%Obtain the other plots using the same syntax%
>>plot(w,abs(f2))
>>plot(w,angle(f2))
%Obtain the third plots using the same syntax%
>>plot(w,abs(f3))
>>plot(w,angle(f3))

To plot simultaneously all the three plots use either "figure" or subplot commands.

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