topic How to generate Eigenvalues in Mathcad https://www.ptcusercommunity.com/t5/Mathcad/How-to-generate-Eigenvalues/m-p/83858#M33064 <HTML><HEAD></HEAD><BODY>Yes, this shouldn't be a necessary step...<BR /><BR />From M14020 Help - eigenvecs(M, ["L"])<BR />"The nth column of the matrix returned is an eigenvector corresponding to the nth eigenvalue returned by eigenvals."<BR /><BR />I seem to recall a problem with this in the past, i.e., the eigenvalues and vectors were not in the same order. Perhaps this was fixed in M14?<BR /><BR />I always check now...<BR /><BR />Rich<BR /><A href="http://www.downeastengineering.com/" target="_new">http://www.downeastengineering.com/</A></BODY></HTML> Tue, 05 Jan 2010 08:00:00 GMT Ninetrees 2010-01-05T08:00:00Z How to generate Eigenvalues https://www.ptcusercommunity.com/t5/Mathcad/How-to-generate-Eigenvalues/m-p/83854#M33060 Hi.I have a worksheet I'm attempting to translate into SQL (Structured Query Language), specifically Transact-SQL (Microsoft SQL Server language).Currently the only stumbling block is that I need to generate Eigenvalues. Are there standard algorithms that I can use, or is this Thu, 03 May 2018 19:48:03 GMT https://www.ptcusercommunity.com/t5/Mathcad/How-to-generate-Eigenvalues/m-p/83854#M33060 PhilipLeitch 2018-05-03T19:48:03Z How to generate Eigenvalues https://www.ptcusercommunity.com/t5/Mathcad/How-to-generate-Eigenvalues/m-p/83855#M33061 <HTML><HEAD></HEAD><BODY>In the attached excel file you can found a macro to compute the eigenvalues if they are reals; that because I don't like to use complexes with excel (using macros or any other cheat), and is one of the most important argument to reject excel.<BR /><BR />The only one excel vba function dependence is mmult, the product of arrays, so hope that can be translated to any other language.<BR /><BR />Regards. Alvaro.</BODY></HTML> Mon, 04 Jan 2010 08:00:00 GMT https://www.ptcusercommunity.com/t5/Mathcad/How-to-generate-Eigenvalues/m-p/83855#M33061 AlvaroDíaz 2010-01-04T08:00:00Z How to generate Eigenvalues https://www.ptcusercommunity.com/t5/Mathcad/How-to-generate-Eigenvalues/m-p/83856#M33062 <HTML><HEAD></HEAD><BODY>The maths of the "Eigenvalues" are given in Mathcad.<BR /><BR />jmG<BR /></BODY></HTML> Mon, 04 Jan 2010 08:00:00 GMT https://www.ptcusercommunity.com/t5/Mathcad/How-to-generate-Eigenvalues/m-p/83856#M33062 ptc-1368288 2010-01-04T08:00:00Z How to generate Eigenvalues https://www.ptcusercommunity.com/t5/Mathcad/How-to-generate-Eigenvalues/m-p/83857#M33063 <HTML><HEAD></HEAD><BODY>Try eigenvals ... and if you also want the vectors eigenvec given one of the eigenvals.<BR /><BR />Steen Gro�e</BODY></HTML> Mon, 04 Jan 2010 08:00:00 GMT https://www.ptcusercommunity.com/t5/Mathcad/How-to-generate-Eigenvalues/m-p/83857#M33063 SteenGroðe 2010-01-04T08:00:00Z How to generate Eigenvalues https://www.ptcusercommunity.com/t5/Mathcad/How-to-generate-Eigenvalues/m-p/83858#M33064 <HTML><HEAD></HEAD><BODY>Yes, this shouldn't be a necessary step...<BR /><BR />From M14020 Help - eigenvecs(M, ["L"])<BR />"The nth column of the matrix returned is an eigenvector corresponding to the nth eigenvalue returned by eigenvals."<BR /><BR />I seem to recall a problem with this in the past, i.e., the eigenvalues and vectors were not in the same order. Perhaps this was fixed in M14?<BR /><BR />I always check now...<BR /><BR />Rich<BR /><A href="http://www.downeastengineering.com/" target="_new">http://www.downeastengineering.com/</A></BODY></HTML> Tue, 05 Jan 2010 08:00:00 GMT https://www.ptcusercommunity.com/t5/Mathcad/How-to-generate-Eigenvalues/m-p/83858#M33064 Ninetrees 2010-01-05T08:00:00Z How to generate Eigenvalues https://www.ptcusercommunity.com/t5/Mathcad/How-to-generate-Eigenvalues/m-p/83859#M33065 <HTML><HEAD></HEAD><BODY>Sorry - what I meant is that I have a worksheet in Mathcad that I am trying to translate into SQL Server's Transact-SQL.<BR /><BR />I think the Excel file is going to be the key to doing this.<BR /><BR />Philip<BR />___________________<BR />Nobody can hear you scream in Euclidean space.</BODY></HTML> Thu, 07 Jan 2010 08:00:00 GMT https://www.ptcusercommunity.com/t5/Mathcad/How-to-generate-Eigenvalues/m-p/83859#M33065 PhilipLeitch 2010-01-07T08:00:00Z