I'm preparing a talk I'm giving at a local conference next week where  I 
will be demonstrating Sage.  
 
I'm wondering about a deprecation warning I've been getting a  lot lately.  
If I define function, say f(x), and I want to  evaluate f(x) at x=2, if I 
enter f(2) I get the warning.  
 
I've been thru the new documentation at _http://www.sagemath.org_ 
(http://www.sagemath.org)  and find that  f.subs(2) is preferred now.  Is that 
right? 
 If so, I am wondering why  this change is being made.  Using a method for 
substitution seems a bit  cumbersome to me.
 
HTH,
A.  Jorge Garcia
_http://calcpage.tripod.com_ (http://calcpage.tripod.com/) 

Teacher  & Professor
Applied Mathematics, Physics & Computer  Science
Baldwin Senior High School & Nassau Community  College


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