Hello, I feel right about one argument functions without parenthesis.
Of corse function call must have a higher priority than operator +-*/^. nobody read sin x + y + 3 as sin (x+y+3), and + and - must have the same priority. How must we read 2^-3. The only way is 2^(-3). Axiom and mupad do so, maple doesn't. But we must remain attentive about 8^2/3 = (8^2)/3, not 8^(2/3)... I find too surprising the ^^^ : the variable ^ -+ : the variable + +-+ : an error -+-+ : (-2) + ++-+- : a comment Allow the user to add new operators will be more usefull... [maybe the ! factorial... ] Maple doesn't allow to use internal function as variable. so sqrt - 1 has no sense. Indeed function names and variables are in the same space, and sin is the code of the function sin... For mupad sqrt - 1 was the function x +-> sqrt (x)-1 because mupad allows operator over functions : f+g is the function x+->f(x)+g(x). As axiom doesn't know operators over functions, so sqrt -1 might be read as sqrt(-1), Axiom already reads 2^-1 = 2^(-1) without problem. I don't code axioms kernel, I don't have the right advice. Francois --~--~---------~--~----~------------~-------~--~----~ You received this message because you are subscribed to the Google Groups "FriCAS - computer algebra system" group. To post to this group, send email to [email protected] To unsubscribe from this group, send email to [EMAIL PROTECTED] For more options, visit this group at http://groups.google.com/group/fricas-devel?hl=en -~----------~----~----~----~------~----~------~--~---
