On Saturday, January 9, 2016 at 5:05:59 AM UTC+8, Nasser M. Abbasi wrote:   
   >   
   > I find having to write  "y x" in place of y(x) when y is operator,   
   > really confusing with Axiom/FriCas notation, as it looks like   
   > multiplication.  But it seems to work with y(x) as well. hum...   
   > so  y(x) is the same as   "y x" when y is operator?  very confusing   
   > to new user :)   
   >   
   > --Nasser   
      
   Concatenation or "space operator" means function application or   
   "() operator" in FriCAS.  So you can write "sqrt abs y x" instead of   
   "Sqrt[Abs[y[x]]]".  I like this notation more than "space stands for   
   multiplication".  After all, calculus is about algebra and composition   
   of functions instead of multiplication of numbers.   
      
   --- SoupGate-Win32 v1.05   
    * Origin: you cannot sedate... all the things you hate (1:229/2)