On Sat, Sep 5, 2009 at 8:11 PM, swulf<summitw...@gmail.com> wrote: > > Perhaps I spoke too soon... the numerical_integral command does not > seem to work on my installation either - once again it appears to > depend upon Maple.
Maple? The numerical_integral command certainly does not use Maple. It just uses the GSL C library. And when you say "does not work", what happens? William > > swulf > > On Sep 5, 11:48 am, swulf <summitw...@gmail.com> wrote: >> Hello, >> >> I'm new to Sage and this group. >> >> I have been doing some simple experimentation with integration in >> order to get up to speed. One thing I attempted was to try and >> calculate an integral, attempting to reproduce the problem described >> on this page: >> >> http://mathforum.org/library/drmath/view/52038.html >> >> Here is how I gave the problem to Sage (V4.1.1 under Windows): >> >> f=sin(x) >> g=f.diff(x) >> h=(sqrt(g^2+1)) >> j=integral(h,x,0,2*pi) >> j >> >> Here is the response from Sage: >> >> integrate(sqrt(cos(x)^2 + 1), x, 0, 2*pi) >> >> This looks like Sage can't perform the integration, and it seems the >> sqrt is the problem, although it doesn't flag any sort of error. In >> the web page I give above, the problem is solved with MAPLE... so I am >> not sure why Sage has a problem with it? >> >> I suspect I am missing something or doing something stupid. Can anyone >> enlighten me please? >> >> Thanks, >> >> swulf > > > -- 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 sage-support-unsubscr...@googlegroups.com For more options, visit this group at http://groups.google.com/group/sage-support URLs: http://www.sagemath.org -~----------~----~----~----~------~----~------~--~---
