Hi,
We plan to write a specialized toolbox for people working
in control theory. As a complete beginner in maxima I
have a simple question: how can I "protect" a variable
from being assigned accidentally? (under maple it is
done using the protect/unprotect commands).
Example: if a user type
t:5;
this yields an error and lets "t" unassigned
Thanks in advance for any hint on this question
A. Marquez