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It helps if you attach your file(s) NOT zipped, saved as a mathcad 11 (or earlier) .MCD file, unless you suspect or know your problem is specific to your version of Mathcad.
Angular units problem. You omitted a factor of 2π.
Generally if you wish to post a native MC14 or MC13 file format, use the compressed XMCDZ format (without rendered images). Keeps file sizes down. __________________ � � � � Tom Gutman
Sorry about that, but the problem is not solved. I started from a good optimization (BeforeOft.jpg) I got with some other product (guess what ...) and I ended with a very bad result (AfterOpt.jpg). Thanks
Checked ! How stupid I feel ... You know, Mathcad is so easy that sometimes one looses attention. The other product is so difficult, on the contrary, that you need to be careful ! Thanks again