On 9/26/07, William Stein <[EMAIL PROTECTED]> wrote: > > One should slightly rewrite the derivative function for > polynomials (and power series) to take > an optional argument (the variable). If the > innput variable is the same as the parent > gen, then differentiate as before; otherwise > attempt to call derivative on the coefficients -- if > that works, good; if not, return 0.
Sorry to respond so quickly, but I've made this trac #756: http://trac.sagemath.org/sage_trac/ticket/756 > > > > /home/wdj/sagefiles/sage-2.8.3.rc3/local/lib/python2.5/site-packages/sage/calculus/functional.py > > in derivative(f, *args, **kwds) > > 45 """ > > 46 try: > > ---> 47 return f.derivative(*args, **kwds) > > 48 except AttributeError: > > 49 pass > > > > <type 'exceptions.TypeError'>: derivative() takes no arguments (1 given) > > > > > > > > > > > -- > William Stein > Associate Professor of Mathematics > University of Washington > http://wstein.org > -- William Stein Associate Professor of Mathematics University of Washington http://wstein.org --~--~---------~--~----~------------~-------~--~----~ To post to this group, send email to sage-support@googlegroups.com To unsubscribe from this group, send email to [EMAIL PROTECTED] For more options, visit this group at http://groups.google.com/group/sage-support URLs: http://sage.math.washington.edu/sage/ and http://sage.scipy.org/sage/ -~----------~----~----~----~------~----~------~--~---