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I would like to have a function in Matlab which returns the Fourier transform of the standard mollifier. I have written

syms x
f = exp(1/(x^2-1));
fourier(f)

The problem is, I would like to restrict the domain of that function to -1 

syms x
f = exp(1/(x^2-1))&&(-1<x<1);
fourier(f)

though obviously this is incorrect syntax. How can I write this correctly?

man_in_green_shirt
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    You can define your [piecewise](https://mathworks.com/help/symbolic/piecewise.html) function as follows: `f = piecewise(x > -1 & x < 1, exp(1/(x^2-1)), 0);` – m7913d Jun 27 '17 at 09:28
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    Or you can also use `heaviside` to define a symbolic function within a range – Ander Biguri Jun 27 '17 at 09:47

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