Peter, The ideal way to do this is to paste the code into the email or in a Github discussion. Making the code as short as possible to demonstrate the issues is also helpful.
Here is a good example: https://github.com/sympy/sympy/discussions/22848 Jason moorepants.info +01 530-601-9791 On Sat, Jan 29, 2022 at 11:07 AM Peter Stahlecker < peter.stahlec...@gmail.com> wrote: > Dear Jason, > I had to send it by separate mail, as I di not know how to attach a file > to gmail.😩😩😩 > Thanks, Peter > > On Sat 29. Jan 2022 at 15:48, Jason Moore <moorepa...@gmail.com> wrote: > >> Peter, >> >> You'll have to share your code for us to help, as this isn't enough >> information. >> >> Jason >> moorepants.info >> +01 530-601-9791 >> >> >> On Sat, Jan 29, 2022 at 9:50 AM Peter Stahlecker < >> peter.stahlec...@gmail.com> wrote: >> >>> I try to model a simple one mass point pendulum in 3D, the mass point is >>> located on the y - axis, at a distance d. Rotations around the y-axis do >>> not make physical sense, hence, I use only qx, qz to describe the angles of >>> rotation of the frame of m. >>> >>> If MM is the mass matrix, I get determinant(M) = 0. >>> As this pendulum is so simple, I do not think I made a mistake modeling >>> it. >>> What could be the problem? >>> >>> Thanks for any help! >>> >> -- >>> You received this message because you are subscribed to the Google >>> Groups "sympy" group. >>> To unsubscribe from this group and stop receiving emails from it, send >>> an email to sympy+unsubscr...@googlegroups.com. >>> To view this discussion on the web visit >>> https://groups.google.com/d/msgid/sympy/44eb551f-453a-47a6-ba23-335b32fd15e9n%40googlegroups.com >>> <https://groups.google.com/d/msgid/sympy/44eb551f-453a-47a6-ba23-335b32fd15e9n%40googlegroups.com?utm_medium=email&utm_source=footer> >>> . >>> >> -- >> You received this message because you are subscribed to the Google Groups >> "sympy" group. >> To unsubscribe from this group and stop receiving emails from it, send an >> email to sympy+unsubscr...@googlegroups.com. >> To view this discussion on the web visit >> https://groups.google.com/d/msgid/sympy/CAP7f1AhLe%2Bz2%3DH-0oEt%3DOeKYrjf%2B4LWN_zArxPc1sF2yu7jypg%40mail.gmail.com >> <https://groups.google.com/d/msgid/sympy/CAP7f1AhLe%2Bz2%3DH-0oEt%3DOeKYrjf%2B4LWN_zArxPc1sF2yu7jypg%40mail.gmail.com?utm_medium=email&utm_source=footer> >> . >> > -- > Best regards, > > Peter Stahlecker > > -- > You received this message because you are subscribed to the Google Groups > "sympy" group. > To unsubscribe from this group and stop receiving emails from it, send an > email to sympy+unsubscr...@googlegroups.com. > To view this discussion on the web visit > https://groups.google.com/d/msgid/sympy/CABKqA0YJ9Oa6TQy%2BMDuBGP6FqduhRjfGJKDkz7czMRKz1qrDTQ%40mail.gmail.com > <https://groups.google.com/d/msgid/sympy/CABKqA0YJ9Oa6TQy%2BMDuBGP6FqduhRjfGJKDkz7czMRKz1qrDTQ%40mail.gmail.com?utm_medium=email&utm_source=footer> > . > -- You received this message because you are subscribed to the Google Groups "sympy" group. To unsubscribe from this group and stop receiving emails from it, send an email to sympy+unsubscr...@googlegroups.com. To view this discussion on the web visit https://groups.google.com/d/msgid/sympy/CAP7f1Ai_8qmJjpUTp%3DYrD6_cii4veTm6uC7kr05BMQxva-grqQ%40mail.gmail.com.
