topic Re: Comet 1811, where are you? in Mathcad https://www.ptcusercommunity.com/t5/Mathcad/Comet-1811-where-are-you/m-p/934075#M210547 <P>One more solution with 5 functions in attach</P> <P>Why at t=P/2 the comet is not in&nbsp;<A title="Apsis" href="https://en.wikipedia.org/wiki/Apsis" target="_blank">Perihelion</A>?</P> Sat, 02 Mar 2024 07:05:19 GMT ValeryOchkov 2024-03-02T07:05:19Z Comet 1811, where are you? https://www.ptcusercommunity.com/t5/Mathcad/Comet-1811-where-are-you/m-p/934069#M210544 <P>Help me please with this problem!</P> <P>Thru ODEs solution - see please the attach Prime 9 file.</P> <P><span class="lia-inline-image-display-wrapper lia-image-align-inline" image-alt="Ellipse-Cyrcle.png" style="width: 999px;"><img src="https://www.ptcusercommunity.com/t5/image/serverpage/image-id/99370i6A8C0378E408224A/image-size/large?v=v2&amp;px=999" role="button" title="Ellipse-Cyrcle.png" alt="Ellipse-Cyrcle.png" /></span></P> <P>See also</P> <P><A href="https://community.ptc.com/t5/Mathcad/Great-Comet-of-1811-ODEs-solution/m-p/736652" target="_blank" rel="noopener">Great-Comet-of-1811-ODEs-solution</A>&nbsp;</P> Sat, 02 Mar 2024 06:13:29 GMT https://www.ptcusercommunity.com/t5/Mathcad/Comet-1811-where-are-you/m-p/934069#M210544 ValeryOchkov 2024-03-02T06:13:29Z Re: Comet 1811, where are you? https://www.ptcusercommunity.com/t5/Mathcad/Comet-1811-where-are-you/m-p/934075#M210547 <P>One more solution with 5 functions in attach</P> <P>Why at t=P/2 the comet is not in&nbsp;<A title="Apsis" href="https://en.wikipedia.org/wiki/Apsis" target="_blank">Perihelion</A>?</P> Sat, 02 Mar 2024 07:05:19 GMT https://www.ptcusercommunity.com/t5/Mathcad/Comet-1811-where-are-you/m-p/934075#M210547 ValeryOchkov 2024-03-02T07:05:19Z