On Tue, Aug 12, 2008 at 9:08 AM, Pol <linux_milano at yahoo.it> wrote:
> 1. Define my function:
> g(x,t):= 1/[(x-t)^2+1];
No, don't use square brackets here; just put in more parentheses.
g(x, t) := 1/((x - t)^2 + 1);
An expression like [foo] is a 1-element list.
Note also that {foo} is a 1-element set.
HTH
Robert Dodier