Function: minus(gradient[0](numbers("xxx") if numbers('epe') if numbers("per") > numbers("xxx") else numbers("xyx") > numbers('epe') else divide(numbers("per") if numbers('epe') > numbers("xyx") else numbers("xxx"), numbers('epe'))), divide(numbers('epe') if numbers("xxx") > numbers("per") else numbers("xyx"), numbers('epe')) if numbers('epe') > numbers("xxx") else numbers("xxx") if numbers("xyx") > numbers('epe') else numbers("per"))
