Function: 2 *(mean(numbers('epe'), numbers('yyx')) if gradient[1](square(mean(numbers('epe'), numbers('yyx'))) if numbers('yyx') > mean(numbers('epe'), numbers('yyx')) else numbers('epe')) > square(mean(numbers('epe'), numbers('yyx'))) else mean(numbers('epe'), numbers('yyx')) if numbers('epe') > square(mean(numbers('epe'), numbers('yyx'))) else numbers('yyx'))
