Function: minus(gradient[0](numbers('yxy') if numbers('xyy') > mean(numbers('yxr'), numbers('xyy')) else numbers('yxr') if mean(numbers('yxr'), numbers('xyy')) > numbers('yxr') else numbers('xyy')), numbers('yxy') if numbers('xyy') > mean(numbers('yxr'), numbers('xyy')) else numbers('yxr') if numbers('yxr') > numbers('xyy') else mean(numbers('yxr'), numbers('xyy')))
