Error when i create functions in sys

syms X
n=1;
F=square(2/(pi*X))*cos(X-pi/4-(pi*n)/2);
Input arguments must be 'double'

what worng?

Answer 1

[Star Strider]

The square (link) function is part of the Signal Processing Toolbox. It does not accept symbolic variables (in your example, that would be ‘X’).

[Karan Gill]

heaviside could help for sym input.