How do I resolve the error in symbolic computation of Fourier Transform

This is the code I am working on:

syms w t
Q_star_hat = fourier(exp(-(t-1)^2),w);
m=fourier(101*(1+exp(-t))*heaviside(t)+2, w);
ufr0star_hat = Q_star_hat/m;
ufr0star =	ifourier(ufr0star_hat,t);
fplot(t, ufr0star);

This doesn't give me a plot and instead give me warning and error:

Warning: Error updating ParameterizedFunctionLine.

The following error was reported evaluating the function in FunctionLine update: DOUBLE cannot convert the input

expression into a double array.

How do I resolve it.

[Mohd Hesham AlHafez]

I am facing a similar problem. I have gone through plenty of web pages and found nothing. Was you able to solve the problem or not ??

Answer 1

[Walter Roberson]

syms w t
Q_star_hat = fourier(exp(-(t-1)^2),w);
m=fourier(101*(1+exp(-t))*heaviside(t)+2, w);
ufr0star_hat = Q_star_hat/m;
ufr0star =	ifourier(ufr0star_hat,t);
string(t)

ans = "t"

string(ufr0star)

ans = "fourier(exp(- (w + 2i)^2/4 - 1)/(105*pi*dirac(w) + 101/(w*1i + 1) - 101i/w), w, -t)/(2*pi^(1/2))"

u1 = subs(ufr0star, t, 1)

u1 = 

double(u1)

Error using symengine
Unable to convert expression containing remaining symbolic function calls into double array. Argument must be expression that evaluates to number.

Error in sym/double (line 800)
Xstr = mupadmex('symobj::double', S.s, 0);

So what is happening is that your ifourier is giving you back something that does not evaluate to a numeric value when a numeric constant is substituted for t. This is something that cannot be plotted.