Replace a symbolic variable with a symbolic expression

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Gennaro Arguzzi
Gennaro Arguzzi 2017-7-3
评论： Gennaro Arguzzi 2017-7-3
Hi eveyone. I've the following code:
close all
clear all
syms t
Y=fourier(heaviside(t));
The result is Y = pi*dirac(w) - 1i/w. My goal is to replace w with 2*pi*f. How can I do that?
Thank you for your help.

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回答（1 个）

John D'Errico
John D'Errico 2017-7-3
Subs does this directly.
help subs
  1 个评论
Gennaro Arguzzi
Gennaro Arguzzi 2017-7-3
Hi John D'Errico, I just tried with subs, but it works only if the first input is pi*dirac(w) - 1i/w. Instead in my code I have Y.

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