2026-07-072026-07-07http://salesiana.dossiersoluciones.com/handle/123456789/157582In this note we contrast two transformation-based methods to deduce absolute extrema and the corresponding extremizers. Unlike variation-based methods, the transformation-based ones of Carlson and Leitmann and the recent one of Silva and Torres are direct in that they permit obtaining solutions by inspection.9 pagesOptimization and Control49J15; 49M30text