Numerical Approximation to the continuous time fourier transform

Calculate samples Y(jw_k) by typing Y=fftshift(tau*fft(y))

>> syms t; >> format compact >> x=symfun(exp(-2.*abs(t)),t); >> y=symfun(x(t-5),t); >> tau=0.01; >> T=10; >> t=[0:tau:T-tau]; >> N=T/tau; >> Y=fftshift(tau*fft(y)) Undefined function 'fft' for input arguments of type 'symfun'.

Not sure what I am doing wrong, I am using Matlab 2016a.

[Karan Gill]

Please format your question. It's hard to read.

Answer 1

[Ahmed raafat]

the error is saying that it can't use fft for syms type

check what fft work on from this page

fft command