On Thursday, February 28, 2013 9:06:45 PM UTC-5, kcrisman wrote: > > > > On Thursday, February 28, 2013 5:21:06 PM UTC-5, Dan Drake wrote: >> >> On Thu, 28 Feb 2013 at 11:56AM -0800, David Smith wrote: >> > I've been experimenting (in an interact) with graphing x^m/e^x for >> large >> > values of m, in order to demonstrate that exp grows faster than any >> power >> > function. This works fine up to m=15, but at 16 (and any higher value) >> I >> > get a long list of errors ending with >> > >> > ParseFatalException: Expected end of math '$' >> > $\verb|1e+12|$ (at char 0), (line:1, col:1) >> > >> > Wolfram Alpha is perfectly happy to graph this function up to m=125, >> and after that, it fails only in lopping off the top of the graph because >> the y-coordinates are too big. >> > Is there some reason why Sage can't handle this? >> >> For me, Sage works fine up to x^115. There it starts to complain that it >> can't evaluate the function (x^115/e^x) at all points. That seems very >> strange to me, although maybe it's running up against the >> maximum size that floats can do -- but the plot looks fine, so maybe >> not? >> > > I would think this is a matplotlib issue that we are encountering - after > all, the error is about 1e+12, or a trillion, so maybe there is something > about how we are passing the tick marks on. David, can you give the > *exact* command? > > - kcrisman >
I'm going to explore this a little more and either post the code or a retraction. I found (after posting), when I put that function into a different graphing interact, that I could push it much farther without failure. So it may have been some less obvious error in the one I was writing. More later. Thanks, guys. -- You received this message because you are subscribed to the Google Groups "sage-edu" group. To unsubscribe from this group and stop receiving emails from it, send an email to sage-edu+unsubscr...@googlegroups.com. To post to this group, send email to sage-edu@googlegroups.com. Visit this group at http://groups.google.com/group/sage-edu?hl=en. For more options, visit https://groups.google.com/groups/opt_out.
