On Fri, Jun 5, 2009 at 12:21 PM, Tim Lahey<[email protected]> wrote: > I hate this notation in Maple, but it's pretty much optional. Plus, > while > I understand using 0-based indexing, the numbers have a particular > meaning > for derivatives, so 0 doesn't make sense for a first derivative. The 0th > derivative is the function.
This is not what the notation means. D[0](f) represented the the derivative of f with respect to the first argument. D[0,0](f) represents taking the derivative with respect to that argument twice. Thus, you can have expressions like D[0,0,1](f)(x,y) --Mike --~--~---------~--~----~------------~-------~--~----~ 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/sage-devel URLs: http://www.sagemath.org -~----------~----~----~----~------~----~------~--~---
