I am a bit new to Sage, what method would you recommend for finding the solutions numerically?
Thanks, Chris On Wed, Jul 16, 2014 at 4:07 PM, Nils Bruin <nbr...@sfu.ca> wrote: > On Wednesday, July 16, 2014 3:49:06 PM UTC-7, Chris Maness wrote: >> >> But I am getting some strange results. Only one root that does not >> match the graph. > > > with: > > sage: find_root?? > > you find that this code calls (via some horrible indirections: find_root > calls f.find_root, which calls find_root again, but now with f._fast_float_, > which calls) scipy.optimize.brentq, which says: > > Find a root of a function in given interval. > > Return float, a zero of `f` between `a` and `b`. `f` must be a > continuous > function, and [a,b] must be a sign changing interval. > > It would have been good if the sage documentation would repeat that > condition. Clearly, in your case you happen to zoom in on a sign-changing > interval on which your function is not continuous. > > -- > You received this message because you are subscribed to the Google Groups > "sage-support" group. > To unsubscribe from this group and stop receiving emails from it, send an > email to sage-support+unsubscr...@googlegroups.com. > To post to this group, send email to sage-support@googlegroups.com. > Visit this group at http://groups.google.com/group/sage-support. > For more options, visit https://groups.google.com/d/optout. -- You received this message because you are subscribed to the Google Groups "sage-support" group. To unsubscribe from this group and stop receiving emails from it, send an email to sage-support+unsubscr...@googlegroups.com. To post to this group, send email to sage-support@googlegroups.com. Visit this group at http://groups.google.com/group/sage-support. For more options, visit https://groups.google.com/d/optout.
