Comment #2 on issue 1620 by asmeurer: Allow derivatives of unknown functions evaluated at a point http://code.google.com/p/sympy/issues/detail?id=1620
The other question is pretty printing. We currently pretty print derivatives using fractional notation: In [1]: diff(f(x), x) Out[1]: d ──(f(x)) dx Maple uses the vertical bar notation to represent evaluation at a point for derivatives that are printed with fractional notation: eval(diff(f(x), x), x = 0); /d \| |-- f(x)|| \dx /|x = 0 This would probably be the best way for us too. I haven't done much with pretty printing. How hard would this be to implement? -- You received this message because you are listed in the owner or CC fields of this issue, or because you starred this issue. You may adjust your issue notification preferences at: http://code.google.com/hosting/settings --~--~---------~--~----~------------~-------~--~----~ You received this message because you are subscribed to the Google Groups "sympy-issues" group. To post to this group, send email to sympy-issues@googlegroups.com To unsubscribe from this group, send email to sympy-issues+unsubscr...@googlegroups.com For more options, visit this group at http://groups.google.com/group/sympy-issues?hl=en -~----------~----~----~----~------~----~------~--~---
