Last night I was deriving the moment of inertia for a solid torus using Sympy. It mostly worked, except for the step where the determinant of the Jacobian for the change of variables mapping was to be computed, the result was unable to be simplified by trigsimp. I gave it a shot anyway, and it resulted in integrate() stalling on the triple integral that is necessary. Using other means to compute the Jacobian of the determinant, then using that result in integrate() resulted in the correct solution for the moment of inertia, which is comforting, but at the same time, really makes me want to get trigsimp to work better.
I know of the paper by Fu, Zhong, and Zeng, but I was wondering if anybody had any other recommendations for approaches to trigonometric simplification. It would be really nice if this part of sympy worked better. If there is somebody else out there who would like to tackle this together, let me know and we could figure out a reasonable approach. Thanks, ~Luke --~--~---------~--~----~------------~-------~--~----~ You received this message because you are subscribed to the Google Groups "sympy" group. To post to this group, send email to [email protected] To unsubscribe from this group, send email to [email protected] For more options, visit this group at http://groups.google.com/group/sympy?hl=en -~----------~----~----~----~------~----~------~--~---
