I could live with nthroot -- but is cuberoot (or curt or cbrt) so different from sqrt? Anyway, it would be nice to have functions that resemble ones students see routinely without generating error messages. I'm very much aware of the difficulties involved in reaching that goal, and I'll be patient.
Still waiting for a solution on arcsec, as well. There the issue is primarily plotting, although "integral" fails, even with a proper domain. numerical_integral works as it should. In the great scheme of things, these are certainly peripheral issues -- and they wouldn't be issues at all if textbook authors didn't feel obliged to drag in every function they know about. As author, I'll guilty of that too (fear of the adoption committee), but in my defense, we only do these things in exercises. On Wednesday, June 18, 2014 8:48:36 PM UTC-4, kcrisman wrote: > > Just to chime in, as someone who has dealt with this question a lot > (though, perhaps ironically, never in a classroom situation): > > I would be very against a "cuberoot" function, but an "nthroot" function > where it was really clear what input was allowed could fly. I appreciate > Greg's rationale. Note however - what is the 0.1 power? Is that the same > as the 1/10 power? This is a tricky floating point question to interpret. > > I don't think that the slowdown would be too bad since it would primarily > be for pedagogical purposes for plotting. > > David, I don't know how this would work with integrals, though - we'd have > to see if Maxima had something equivalent. Perhaps it could do a temporary > set of the Maxima domain to real somehow, if that is what allows Maxima to > do the "right thing" in this context, I don't know. > > Thanks for fighting the good fight on trying to resolve this once and for > all! > - kcrisman > -- 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 [email protected]. To post to this group, send email to [email protected]. Visit this group at http://groups.google.com/group/sage-edu. For more options, visit https://groups.google.com/d/optout.
