Function: product(minus(square(numbers('yyx')), numbers('yyx')) if square(numbers('yyx')) > sum(gradient[2](minus(square(numbers('yyx')), numbers('yyx'))), minus(square(numbers('yyx')), numbers('yyx'))) else gradient[2](minus(square(numbers('yyx')), numbers('yyx'))), sum(gradient[2](minus(square(numbers('yyx')), numbers('yyx'))), minus(square(numbers('yyx')), numbers('yyx'))))
