On Sun, Jun 13, 2010 at 4:37 PM, William Stein <wst...@gmail.com> wrote: > Here's what you can do in Sage (or Maxima): > Unfortunately, just doing > > sage: var('n') > n > sage: sum((4/(8*n+1)-2/(8*n+4)-1/(8*n+5)-1/(16*n+12)-1/(16*n+14)), n, 0,oo) > > in sage leads to: > > TypeError: unable to make sense of Maxima expression > '-(22*log(2)-2*psi[0](7/8)-4*psi[0](5/8)+16*psi[0](1/8)-pi+10*euler_gamma)/32' > in Sage
This is fixed in 4.4.4.alpha1 (when it comes out) by #9217. sage: var('n') n sage: sum((4/(8*n+1)-2/(8*n+4)-1/(8*n+5)-1/(16*n+12)-1/(16*n+14)), n, 0,oo) 1/32*pi - 5/16*euler_gamma - 1/2*psi(1/8) + 1/8*psi(5/8) + 1/16*psi(7/8) - 11/16*log(2) --Mike -- To post to this group, send an email to sage-devel@googlegroups.com To unsubscribe from this group, send an email to sage-devel+unsubscr...@googlegroups.com For more options, visit this group at http://groups.google.com/group/sage-devel URL: http://www.sagemath.org